TW201026951A - Wind driven generator - Google Patents

Wind driven generator Download PDF

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Publication number
TW201026951A
TW201026951A TW098132514A TW98132514A TW201026951A TW 201026951 A TW201026951 A TW 201026951A TW 098132514 A TW098132514 A TW 098132514A TW 98132514 A TW98132514 A TW 98132514A TW 201026951 A TW201026951 A TW 201026951A
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TW
Taiwan
Prior art keywords
air
outer cover
rotor head
air flow
forming device
Prior art date
Application number
TW098132514A
Other languages
Chinese (zh)
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TWI394889B (en
Inventor
Shigeto Hirai
Shinsuke Sato
Takeshi Matsuo
Yasushi Okano
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Mitsubishi Heavy Ind Ltd
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Publication of TW201026951A publication Critical patent/TW201026951A/en
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Publication of TWI394889B publication Critical patent/TWI394889B/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60—Cooling or heating of wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/12—Fluid guiding means, e.g. vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/14—Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/20—Heat transfer, e.g. cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/64—Aeration, ventilation, dehumidification or moisture removal of closed spaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

A wind driven generator, wherein air flow for efficiently causing air to flow between the inside of a nacelle and the inside of a cover is formed inside the cover to efficiently cool the inside of the cover. A wind driven generator (1) is provided with a rotor head (4) to which impeller blades (6) are mounted, a cover (5) for covering the rotor head (4), and a nacelle (3) in which a electricity generating facility (7) connected to the rotor head (4) is mounted and housed, and air is caused to flow between the inside of the cover (5) and the inside of the nacelle (3). An airflow forming device (20) for forming airflow is provided inside the cover (5).

Description

201026951 六、發明說明： 【發明所屬之技術領域】 本發明是關於使用可將天然能源的風力轉換爲旋轉力 的風車來進行發電的風力發電裝置。 【先前技術】 以往已知有可利用天然能源的風力來進行發電的風力 φ 發電裝置。這種風力發電裝置係在被設置於支柱上的機艙 上，設置：安裝了風車葉片的轉子頭、被連結成可與這個 轉子頭呈一體地旋轉的主軸、被連結於當風車葉片承受到 風力就會旋轉的主軸之增速機、被增速機的軸輸出所驅動 的發電機。轉子頭是被外罩所包覆，以資保護轉子頭不受 到雨水等的淋濕。 在這種結構的風力發電裝置中，因爲具有可將風力轉 換成旋轉力的風車葉片的轉子頭以及主軸的旋轉，而產生 ❹ 了軸輸出，再經由與主軸相連結的增速機將迴轉數增速之 後的軸輸出傳達到發電機。因此，可將風力轉換成旋轉力 所獲得的軸輸出當作發電機的驅動源，利用風力來作爲發 電機的動力以進行發電。 在機艙內部係收納設置著例如：增速機、發電機之類 的運轉時會發熱的機件。因此，係採用了例如：形成有空 氣吸氣口以及空氣排氣口，利用被風車所運轉的風扇來對 於機艙內部進行換氣以防止溫度上昇的冷卻構造之類的各 種型式的冷卻構造。 -5- 201026951 又，在轉子頭內係收納設置著例如：可因應風速的變 動而迅速且精密地改變風車葉片的傾角之傾角控制裝置等 傾角控制裝置，例如係由：被電動機所驅動的油壓泵 浦等的驅動機器類、用以執行傾角控制的操控面板等的控 制機器類所構成，係屬於會發熱的機器。爲了確保這些機 器的可靠性，必須考慮到冷卻的問題。 以往，係讓空氣在機艙內部與外罩內部之間自然對流 @ 以資將外罩內的空間予以冷卻。 此外，有人提出的技術方案係如專利文獻1所揭示的 這種，在圍繞於被設置在轉子頭內的會發熱的電氣零件的 外殼上，安裝散熱板，該散熱板係被植設了許多個散熱鰭 片，利用隨著輪轂的旋轉而旋轉的風扇來對於這種散熱板 施加氣流而予以冷卻。 [先前技術文獻] 〇 [專利文獻] [專利文獻1]美國發明專利第723 5 895號說明書 【發明內容】 [發明所欲解決的課題] 然而，風力發電裝置因爲對應於近年來的發電大輸出 化，風車葉片趨於大型化的傾向。因此，設置在轉子頭內 的機器類的輸出也有增大的必要，因而隨著輸出的增大， -6- 201026951 機器類的發熱量也增加了。 這種發熱量的增加將會導致轉子頭的內部溫度上昇， 所以對於由：必須做設置環境的溫度管理的電氣和電子零 件所組成的控制機器類而言，更加地處於嚴酷的狀況。 因爲外罩內部的前方是密閉空間，所以在其內部很難 讓空氣流通。因此，如果是以往的這種將機艙內部與外罩 內部之間相連通並讓空氣自然流通的結構的話，因轉子頭 Φ 內的發熱而溫度上昇後的空氣中的幾乎所有的熱空氣都保 持在原地不動的滯留狀態，所以無法進行充分的冷卻。 又，即使採用專利文獻1所揭示的方法，被散熱板所 散熱後的熱量還是滯留在轉子頭的內部，所以因該熱量的 累積而導致散熱效率惡化，將變成無法進行充分的冷卻。 本發明係有鑑於上述的情事，因此本發明之目的係提 供：風力發電裝置，係在外罩內部形成可與機艙之間有效 率地讓空氣流通的氣流，因而能夠有效率地進行外罩內部 β 的冷卻之風力發電裝置。 [用以解決課題之技術手段] 本發明爲了解決上述的課題，係採用了下述的技術手 段。 亦即，本發明的其中一種態樣的風力發電裝置是具備 :安裝著風車葉片的轉子頭、用以包覆該轉子頭的外罩、 收納設置著與該轉子頭相連結的發電設備的機艙，且讓空 氣流通於前述外罩內部與前述機艙內部之間的風力發電装 201026951 置，在前述外罩的內部係具有：用以形成氣流的氣流形成 裝置。 這種風力發電裝置，外罩以及轉子頭係藉由被固定在 轉子頭上的主軸而可自由轉動地被支承在機艙。運轉中， 一旦風車葉片承受到風力的話，在風車葉片上就會產生令 轉子頭朝向旋轉軸線外圍旋轉的力量，轉子頭將朝向主軸 外圍被旋轉驅動。這種旋轉驅動力又被增速機增加旋轉數 並被傳達給發電機，因爲發電機受到驅動所以就會進行發 @ 電。 此時，相對於保持一定姿勢的機艙，外罩以及轉子頭 係正在進行旋轉，所以機艙與外罩以及轉子頭之間的相對 位置關係是隨時都在變化。 根據本發明，係讓空氣在外罩內部與機艙內部之間進 行流通。這是從機艙朝向外罩讓溫度比較低的空氣氣流入 (流入部），從外罩朝向機艙讓經過暖化後的空氣排出（ 排出部）。如此一來，外罩內部就被冷卻了。這個流入部 〇 以及排出部，從機艙來看，係存在著最適當位置。 根據本態樣，因爲是在外罩內部具備了 ：用以形成氣 流的氣流形成裝置，所以可利用氣流形成裝置所形成的氣 流，讓外罩內部的空氣良好地進行流通。藉此，可有效率 地將外罩內部予以冷卻。 又’氣流形成裝置所形成的氣流對於機艙係被形成朝 向大致一定的方向流動，所以藉由讓氣流的上游側對應於 流入部，讓下游側對應於排出部，就可以順暢進行轉子頭 -8- 201026951 與機艙之間所形成的空氣循環。 藉此，可更爲有效率地將外罩內部予以冷卻。 是以，因爲可有效率且確實地將外罩內予以冷卻，所 以能夠使控制機器類正常地運作而讓發電持續地進行。隨 著風力發電裝置的大型化，執行藉由冷卻轉子頭內部的溫 度管理，而能夠提昇風力發電裝置的可靠性和耐久性》 在上述態樣中，前述氣流形成裝置係從下側朝向上側 φ 形成前述氣流爲宜。 空氣等的氣體，溫度一上昇的話就會膨脹，因此每一 單位體積的重量會變小，亦即，浮力會變大。 根據本發明，氣流形成裝置是從下側朝向上側形成氣 流，所以將外罩內的機器等予以冷卻而被暖化之溫度上升 後的空氣，將被朝向上方引導。是以這種方式將具有較大 浮力的空氣朝向上側推舉，因此可有效率地讓空氣流通。 這種情況，從機艙朝向外罩讓較低溫度的空氣流入的 ® 流入部係設置在下側，從外罩朝向機艙讓暖化後的空氣排 出去的排出部係被設置在上側爲宜。 在上述態樣中，前述氣流形成裝置的結構亦可製作成 具備有：可在送風方向上形成空氣氣流的送風構件。 這種情況下，前述送風構件亦可以是：在前述外罩的 內部被固定安裝成可讓前述送風方向與前述轉子頭的軸線 交叉，並且選擇性地在沿著前述送風方向的兩側的任何一 側，形成空氣氣流。 因爲是以這種方式將送風構件在外罩內部固定安裝成 201026951 :讓送風方向與轉子頭的軸線交叉，因此，送風構件係隨 著外罩以及轉子頭的旋轉，呈一體地朝向轉子頭的軸線外 圍旋轉。只要在送風方向的其中一側形成空氣氣流的話， 空氣氣流的方向都會在整個360度都產生變動。 根據本發明的這種結構，送風構件是選擇性地在沿著 送風方向的兩側之其中一側形成空氣氣流，所以送風構件 可使得位在例如：隔著轉子頭的軸線互相對向的位置上（ 換言之，位在旋轉相位相隔180度的位置上）時的送風方 @ 向互相不同。如此設置的話，在這兩個位置上的空氣氣流 的方向會變成一致，所以藉由在旋轉方向上的預定的位置 將送風方向的送出方向予以逆轉，即可將空氣氣流的方向 抑制在例如：1 80度以內。又，在這個逆轉位置的前後位 置上，令送風構件停止送風的話，可將空氣氣流的方向限 定在更狹窄的角度範圍。 因此，送風構件係可形成：在對於機艙保持大致一定 方向上的氣流。而且送風構件是被固定安裝，所以不必設 @ 置特別的可動機構，因此可簡化構造，可低價製造。 此外，送風方向與轉子頭的軸線交叉的角度係愈接近 直角愈好。這是因爲送風構件在某一位置上送風時的方向 係與其在旋轉180度後的位置上朝相反方向送風時的方向 一致的緣故。 又，基於因旋轉的變動所產生的影響會變少的緣故， 所以是將送風構件配置成靠近轉子頭的軸線爲宜。 在上述結構中，亦可將前述送風構件配置成：前述送 -10- 201026951 風方向係與前述轉子頭的軸線交叉，並且是以可朝向與 述送風方向大致正交的旋轉軸線外圍旋轉的方式被安裝 前述外罩的內部。 是以’因爲送風構件係被配置成：送風方向係與前 轉子頭的軸線交叉’所以送風構件係隨著外罩以及轉子 的旋轉而呈一體地朝向轉子頭的軸線外圍旋轉。在固定 狀態下，送風構件的送風方向會在整個360度進行變化 © 在本結構中，送風構件係以可朝向與送風方向大致 交的旋轉軸線外圍旋轉的方式安裝在外罩的內部，所以 其朝旋轉軸線外圍旋轉的話，就可改變送風方向。例如 如果讓送風構件朝向轉子頭的軸線外圍旋轉後的角度與 風構件即將朝旋轉軸線外圍旋轉的角度大致一致的話， 風構件所形成的空氣氣流的方向就不會偏向這個角度， 是大致保持一定。因此，送風構件係可形成朝向對於機 大致一定方向上的氣流。 β 至於可使送風構件旋轉的手段，係可以採用例如： 送風構件上的從旋轉軸線觀看時與形成空氣氣流的方向 反側的位置上，安裝重錘。如此一來，送風構件朝向轉 頭的軸線外圍旋轉的話，送風構件就會以讓重錘一直保 位於下方位置的方式，朝向旋轉軸線外圍旋轉，因此， 可以讓送風構件所形成的空氣氣流一直是朝向上方。只 安裝重錘就可確實地將空氣氣流的方向保持爲一定’因 構造很簡單而可低價地製造。 此外，送風方向與轉子頭的軸線交叉的角度’係愈 刖 在 述 頭 的 〇 正 令 送 送 而 艙 在 相 子 持 就 要 此 接 -11 - 201026951 近直角愈好。這是因爲送風構件在某一位置所送風的方向 係與其在旋轉180度後的位置進行送風時的方向一致的緣 故。 又，基於因旋轉的變動所導致的影響會變少的緣故， 送風構件最好是配置成靠近轉子頭的軸線。 在上述結構中，前述氣流形成裝置亦可以是具備：呈 筒狀且被固定安裝在前述外罩的內部，其長軸方向係與前 述轉子頭的軸線交叉的固定通風管；被固定安裝在該固定 ® 通風管的長軸方向上的中間位置，可朝該長軸方向的其中 一方向形成空氣氣流的送風構件；可擺動地安裝於前述固 定通風管上的前述空氣氣流的下游側端部，而形成前述固 定通風管的延長部的第1可動通風管；而且是被配置成： 該第1可動通風管係對應於因前述外罩以及前述轉子頭的 轉動所導致的前述固定通風管的位置移動，而進行擺動， 以將前述空氣氣流的吹出方向朝向前述大致一定的方向的 下游側。 ® 根據這種配置方式，送風構件所形成的空氣氣流係沿 著固定通風管流動，經由第1可動通風管吹出去。 固定通風管係被固定地安裝在外罩的內部，所以固定 通風管係隨著外罩以及轉子頭的旋轉而呈一體地朝向轉子 頭的軸線外圍旋轉。如此一來，流經過固定通風管的空氣 氣流的方向係在整個360度的方向都進行變化。 此時，第1可動通風管係對應於隨著外罩以及轉子頭 的轉動所導致的固定通風管的位置移動，而將空氣氣流的 -12- 201026951 吹出方向朝向大致一定的方向的下游側，所以可在對於機 艙大致一定的方向上形成氣流。 在上述的配置方式中，前述第1可動通風管亦可在： 中間隔著其擺動中心之位於前述空氣氣流的吹出口的相反 側，安裝有第1重錘。 如此一來，當固定通風管朝向轉子頭的軸線外圍旋轉 的話，第1可動通風管就會以第1重錘一直保持在下方位 # 置的方式進行擺動，所以可將空氣氣流的吹出口一直保持 朝向上方" 在上述的配置方式中，亦可製作成：前述氣流形成裝 置係具備有：可擺動地安裝於前述固定通風管的前述空氣 氣流的上游側端部，以形成前述固定通風管的延長部之第 2可動通風管，該第2可動通風管係對應於隨著前述外罩 以及前述轉子頭的轉動所導致的前述固定通風管的位置移 動而進行擺動，以將前述空氣氣流的吸入方向朝向前述大 〇 致一定的方向的上游側。 根據這種結構，第2可動通風管係對應於隨著外罩以 及轉子頭的轉動所導致的固定通風管的位置移動而進行擺 動，因爲係將空氣氣流的吸入方向朝向大致一定的方向的 上游側，所以可從對於機艙大致一定的方向的上游側吸入 空氣。可與上述第1可動通風管的作用相輔相成，確實地 在對於機艙大致一定的方向上形成氣流。 在上述結構中，前述第2可動通風管亦可在前述空氣 氣流的吸入口側安裝有第2重錘。 -13- 201026951 如此一來，當固定通風管朝向轉子頭的軸線外圍旋轉 的話，第2可動通風管就會以第2重錘一直保持在下方位 置的方式進行擺動，所以可讓空氣氣流的吸入口一直保持 朝向下方。 在上述態樣中，前述氣流形成裝置的結構亦可以是具 備有：設在前述外罩的側面上之貫穿該側面的至少1個貫 通孔部、以及用以將該貫通孔部予以開閉之開閉構件。 因爲風力發電裝置的風車葉片是一直朝向迎風的方向 ❹ ，所以外罩也是朝向迎風的方向。當貫通孔部被開放的情 況下，風將會通過該貫通孔部而流入到外罩的內部。當貫 通孔部被封閉的情況下，風就不會通過該貫通孔部流入到 外罩的內部。 因爲貫通孔部是設在外罩的側面，因此當外罩朝向轉 子頭的軸線外圍旋轉的話，將會以畫圓周的方式移動其位 置° 如果利用開閉構件，在圓周上的特定範圍內將貫通孔 〇 部開放，在其他的範圍內將貫通孔部封閉的話，風將會在 圓周的特定範圍的部分通過貫通孔部而流入到外罩的內部 ，而可形成朝向另一側的氣流。亦即，根據這種方式，氣 流形成裝置係可在對於機艙大致一定的方向上形成氣流。 此外，將貫通孔部予以開放的位置，基於雨水等的侵 入比較少，以及氣流的方向較爲良好的因素，最好是選定 在位於外罩的下部的範圍。 此外，亦可在圓周方向上設置複數個貫通孔部。如此 14- 201026951 一來，氣流可以形成較爲連續。 在上述結構中，亦可將前述開閉構件製作成：具有蓋 部以及第3重錘，該蓋部係一個板材，其兩側面分別是作 爲封閉面以及開放面，在較之厚度方向的中心位置更靠近 前述開放面側的位置，可旋轉地被前述外罩所支承；該第 3重錘是安裝在前述開放面，當前述封閉面與前述貫通孔 部相對向時，就將前述貫通孔部予以封閉。 φ 如此一來，蓋部就會以讓第3重錘一直保持在下方位 置的方式進行轉動。亦即當開閉構件位於外罩的下部時， 第3重錘位於下方，所以是在封閉面上方也就是位於外罩 的內部側，開放面係與貫通孔部相對向。在這種狀態下， 外罩朝向轉子頭的軸線外圍旋轉而超越過水平位置的話， 開放面就較之封閉面位於更上側，亦即，變成第3重錘位 於上方的狀態，蓋部將會因爲受到第3重錘往下方移動的 作用而會進行旋轉。如此一來’則是變成封閉面與貫通孔 φ 部相對向，所以貫通孔部就被封閉面所封閉。 是以，貫通孔的位置係在位於大致下半分的位置時被 開放，在位於大致上半分的位置時被封閉，所以可形成從 下側朝向上側的空氣氣流。 [發明之功效] 根據本發明，因爲是在外罩內部具備有：可朝向對於 機艟大致一定的方向上形成氣流的氣流形成裝置，所以能 夠將外罩內部予以有效率地冷卻》 -15- 201026951 又，氣流形成裝置所形成的氣流係朝向對於機艙大致 一定的方向流動，因此，能夠讓形成在轉子頭與機艙之間 的空氣循環順暢地進行。 因爲是以這種方式能夠有效率且確實地將外罩內予以 冷卻，所以可讓控制機器類正常地運作而持續地進行發電 。隨著風力發電裝置的大型化，執行藉由冷卻轉子頭內部 的溫度管理，而能夠提昇風力發電裝置的可靠性和耐久性 【實施方式】 以下，將佐以圖面來說明本發明的風力發電裝置的實 施方式。 [第1實施方式] 茲佐以第1圖〜第7圖來說明本發明的第1實施方式 〇 第1圖係顯示本第1實施方式的風力發電裝置1的整 體槪略結構的側面圖。 在風力發電裝置1係設有：豎設在基礎B上的塔柱2 、設置在塔柱2的上端的機艙3、被設在機艙3之可朝大 致水平的旋轉軸線（轉子頭的軸線）L的外圍旋轉的轉子 頭4、包覆轉子頭4的外罩5、呈放射狀被安裝在轉子頭 4的旋轉軸線L的外圍的複數片風車葉片6、利用轉子頭 4的旋轉而進行發電的發電設備7。 -16- 201026951 此外，在本實施方式中，是以應用在設有3片風車葉 片6的例子來作說明。爲了方便說明起見，在用來特定到 底是哪一個風車葉片6的時候，會附加上小寫的英文字母 “ a” 、 “ b” 、 “ c”來做區別。 風車葉片6的數量並不侷限爲3片，亦可適用爲2片 的情況、或者較之3片更多的情況，並未特別地限定。 塔柱2係如第1圖所示，係具有從基礎B向上方（第 e 1圖的上方）延伸的柱狀結構，例如：係可採用將複數個 單元在上下方向連結而成的結構。 在塔柱2的最上部係設有機艙3。當塔柱2係由複數 個單元所構成的情況下，機艙3是設置在被設在最上部的 單元上。 機艙3係如第3圖所示，可旋轉地支承著被固定在轉 子頭4上的主軸8。 在機艙3的內部，例如第1圖所示，收納設置著發電 © 設備7，該發電設備7則是：具有經由與轉子頭4同軸的 增速機10而連結的發電機11。 亦即，將轉子頭4的旋轉經由增速機10予以增速之 後，用來驅動發電機11，藉此可從發電機11獲得發電機 輸出W。 在機艙3的內部，因增速機10、發電機11等的旋轉 所產生的發熱，以及因變壓器（圖示省略）等的發熱，而 導致內部溫度上昇。 因此，此處雖然未予以圖示，但是係設置有：變壓器 -17- 201026951 冷卻器、潤滑油冷卻器來進行冷卻，並且在機艙3的適當 的地方，爲了將內部予以換氣來加以冷卻，係設有具備冷 卻風扇的吸排氣口。 因此，機艙3的內部，因爲進行了內部空氣的冷卻以 及換氣而處於溫度較低的狀態。 第2圖係顯示第1圖的轉子頭4的結構的局部擴大圖 。第3圖〜第6圖係顯示外罩5的內部及其週邊結構的示 意圖、第3圖以及第5圖係側面示意圖、第2圖以及第6 ❹ 圖係正面示意圖。 在轉子頭4上，係如第1圖以及第2圖所示，在其旋 轉軸線L的外圍，呈放射狀地安裝有複數片的風車葉片6 ，其周圍則是被外罩5所密閉包覆著。 在轉子頭4上，係對應於各風車葉片6，以1對1的 方式設置有：可使風車葉片6朝向風車葉片6的軸線外圍 旋轉，以改變風車葉片6的傾角之傾角驅動裝置12。 在轉子頭4的內部，則是收納設置著構成傾角驅動裝 · 置12的油壓機器類和操控面板等。這些機器當中，油壓 泵浦等的油壓機器類是發熱體，另外，構成操控面板的這 種控制機器類的電氣和電子零件，則是會受到設置環境的 溫度條件的制約。又，對於這些機器而言，雨水等的A侵 並不是好事，所以外罩5是必須具有密閉性。 在外罩5與機艙3之間，利用外罩5的內部與機艙3 的內部之間，來形成可令空氣循環的連通路9。在連通路 9中，係安裝著例如：打孔金屬板、網狀構件等的區隔板 -18 - 201026951 ，將外罩5的內部以及機艙3的內部的兩個空間以空氣可 流通的連通狀態來予以區隔（圖示省略）。 雖然是只要有連通路9存在的話就可以了，但是亦可 具備有可積極地促進循環的循環促進手段。 作爲這種循環促進手段，例如··第3圖所示地，亦可 在位於連通路9的上部的機臆3具備有：可形成將外罩5 內的較高溫的空氣吸入到機艙3內的空氣氣流的風扇18 φ 。此外，亦可同時在位於連通路9的下部的機艙3具備有 :可形成將機艙3內的較低溫的空氣推入到外罩5內的空 氣氣流的風扇19。 這種情況下，風扇18以及風扇19亦可只具備其中一 種。 風扇18以及風扇19亦可以利用與被安裝在可旋轉的 轉子頭4或主軸8上的齒輪相嚙合的齒輪來予以驅動。如 此一來，即使不另外設置電動機等的驅動源，亦可利用機 Φ 械方式讓風扇18以及風扇19作動。 此外，作爲這種循環促進手段，並不侷限爲風扇18 、1 9，亦可以是例如：將複數片呈翼形的引導構件在圓形 連通路9的外周方向上的大約一半圓周的範圍，以大致相 同傾角的方式固定配設在機艙3側。 當外罩5以及轉子頭4進行旋轉的話，外罩5內的空 氣將會旋轉，受到引導構件所引導而會被送入到機艙3的 內部。引導構件不必專用的動力就可進行相對的旋轉運動 ，可經由在旋轉側的外罩5與固定側的機艙3之間所形成 -19- 201026951 的連通路9’來加大朝向機艙3側的空氣量。 在外罩5的內部，在轉子頭4的前端部與外罩5的前 端部之間的空間，也就是在外罩5的內部空間安裝著氣流 形成裝置20。 氣流形成裝置20是具備有：風扇（送風構件）21、 在旋轉軸上安裝著風扇21並且可將風扇21予以旋轉驅動 的馬達23、將風扇21以及馬達23安裝於外罩5內的安 裝構件25。 · 氣流形成裝置20係如第2圖所示地，係以風扇21的 軸線中心沿著風車葉片6a的軸線L6，風扇21位在風車 葉片6a的前端側，馬達23位在風車葉片6a的根部側的 方式配置。 氣流形成裝置20是固定安裝在旋轉軸線l通過風扇 21的厚度方向的大致中間位置的地方。亦即，被固定安 裝成可使風扇21的送風方向與旋轉軸線L大致正交（交 叉）。 ⑩ 是以，因爲風扇21係被配置成讓送風方向與轉子頭 4的旋轉軸線L正交，所以風扇21將會跟隨著外罩5以 及轉子頭4的旋轉而呈一體地朝向旋轉軸線L的外圍旋轉 。因此，當風扇21被固定在其中一側的狀態下，風扇21 的送風方向將會呈3 60度的變化。 馬達23是藉由未圖示的控制部而可進行正轉或反轉 作動。藉此，風扇21也可以正轉或反轉。 例如：當風扇21正轉的話，風扇21就如第3圖以及 -20- 201026951 第4圖所示般地’從馬達23朝向風扇21送風。 另外，當風扇21反轉的話，風扇21就如第5圖以及 第6圖所示般地，從風扇21朝馬達23送風。 其次，將說明由上述的結構所構成的風力發電裝置1 的動作。 在風力發電裝置1身上，從轉子頭4的旋轉軸線L方 向吹抵風車葉片6的風力將被轉換成令轉子頭4朝向旋轉 ® 軸線L外圍旋轉的動力。 這個轉子頭4的旋轉會經由主軸8而傳達到增速機 1〇。這種旋轉將被增速機10所增速之後，被輸入到發電 機11，因而進行發電機11的發電。發電機11所發電的 電力則是利用電壓器等來轉換成電力供給對象所需要的電 力，例如：頻率爲50Hz或60Hz的交流電。 此處，爲了至少在於進行發電的期間，讓風力有效地 作用到風車葉片6上，可藉由適宜地令機艙3在水平面上 旋轉，以使的外罩5以及轉子頭4朝向迎風方向。 此時，在連通路9的上部區域中，利用風扇18而形 成從外罩5內朝向機艙3側的空氣氣流，而將因受到傾角 ‘驅動裝置12等的發熱所加熱導致溫度上昇後的較高溫空 氣從外罩5內吸出來送往機艙3側。 藉此，外罩5的內壓降低，所以機艙3的內壓相對地 變高。在連通路9的下部區域中，係形成從內壓較高的機 艙3側朝往外罩5內流動之較低溫空氣的流動。利用這種 空氣的流動將外罩5內予以冷卻。 -21 - 201026951 此外，即使不使用風扇18等的循環促進手段，還是 可以透過連通路9來形成這種空氣的流動。亦即，在外罩 5內，溫度較高的空氣係往上方移動，爲了彌補這種移動 ，在連通路9的下部區域中，溫度較低的空氣係從機艙3 側朝往外罩5側流動。因爲外罩5的上部的內壓變高，所 以在連通路9的上部區域中，較高溫的空氣係從外罩5側 朝往機艙3側流動。 然而，因爲外罩5、風車葉片6以及轉子頭4都在旋 參 轉，因此外罩5內的空氣的流動未必與通過連通路9的空 氣的流動一致，通過連通路9來進行循環的空氣的流動變 得不夠充分。 如此一來，外罩5的內部空間就有冷卻不夠充分之虞 慮。 在本實施方式中，爲了解決這種問題，係在外罩5內 設置氣流形成裝置20。 以下將說明這種氣流形成裝置20的動作。 @ 當轉子頭4旋轉的話，風車葉片6將以旋轉軸線L作 爲中心，例如：係朝向時鐘外圍的圓周方向移動。 此時，風車葉片6a係以例如：第7圖的上側所示的 方式，姿勢發生變化。風車葉片6a係從：由轉子頭4朝 往從風向方向觀察時之左側延伸的水平位置A起，依序 地豎立起來而變成往上方延伸的上方位置B (如第3圖以 及第4圖所示的位置）。接下來，風車葉片6a係依序地 往右側傾斜而變成朝往右側延伸的水平位置C。接下來， -22- 201026951 轉子頭4又進行旋轉的話’風車葉片6a就變成前端朝向 下方，其傾斜變大而變成朝往下方延伸的下方位置D(如 第5圖以及第6圖所示的位置）。然後，風車葉片6a又 回到水平位置A，這種姿勢的變化是反覆地進行。 控制部係將馬達23也就是風扇21的旋轉數以第7圖 的下側所示的方式予以變化。亦即，從水平位置A起通 過上方位置B之後到達水平位置C之前，馬達23係進行 〇 正轉’風扇21係從馬達23朝向風扇21，亦即，朝向風 車葉片6a的前端側送風。馬達23在中間位置係保持預定 的旋轉數，在水平位置A以及接近水平位置C的位置係 將旋轉數漸增或漸減。 因此，在這個期間中，例如：位在上方位置B的狀態 也就是如第3圖以及第4圖所示般地，風車葉片6a的前 端係在轉子頭4的上方，也就是較之風車葉片6a的根部 更上方的位置，因此風扇21係朝上方送風。 β 在水平位置A、C的旁邊時，風扇21雖然是朝水平 方向送風，但是在該部分時係將送風量予以減少，所以可 抑制對於送風方向帶來較大的影響。 另一方面，從水平位置C起通過下方位置D之後到 達水平位置A之前，馬達係進行反轉，風扇21係從風扇 21朝向馬達23，亦即，朝向風車葉片6a的根部側送風。 馬達23在中間位置時係保持預定的旋轉數，在接近水平 位置A、C的位置時，係將旋轉數漸增或漸減。 因此，在這個期間中，係例如：位在下方位置D的 -23- 201026951 狀態之如第5圖以及第6圖所示般地，因爲風車葉片6a 的前端是位在轉子頭4的下方，亦即較之風車葉片6a的 根部更下方的位置，所以風扇21是朝上方送風。 在水平位置A、C的旁邊時，風扇21雖然是朝水平 方向送風，但是在該部分時，係將送風量減少，所以可抑 制對於送風方向的較大影響。 以這種方式，來區分風車葉片6a通過上半分區域的 位置與通過下半分區域的位置，以將風扇21的送風方向 ❹ 予以逆轉，所以風扇21所形成的空氣氣流在與旋轉軸線 L正交的平面內，雖然是呈傾斜，但是對於機艙3而言， 大槪都是從下側朝向上側的方向。 是以，氣流形成裝置20係在外罩5的內部形成從下 方朝向上方的氣流之故，可讓在外罩5內部的空氣的流通 良好地進行。藉此，可將外罩5內部予以有效率地進行冷 卻。這是因爲又加上了 ：將外罩5內的傾角驅動裝置12 等予以冷卻之後而被暖化後的高溫空氣因其浮力的增加而 · 被往上方引導的因素，而可相輔相成地更有效地使空氣進 行流通。 因爲氣流形成裝置20所形成的氣流係對於機艙3從 下方朝向上方之朝大致一定的方向流動’所以氣流的下游 側係與形成在連通路9的上部之從外罩5側朝向機艙3側 流動的區域一致。氣流的上游側係與形成在連通路9的下 部之從機艙3側往外罩5側流動的區域一致。 藉此，可以讓形成在外罩5的內部與機艙3的內部之 -24- 201026951 間的空氣的循環順暢地進行，因此可更有效率地將外罩5 內部予以冷卻。 是以，可以有效且確實地進行外罩5內的冷卻’因此 可使傾角驅動裝置12的控制機器類正常地作動而使發電 持續進行。 隨著風力發電裝置1的大型化，可藉由對於外罩5內 部進行冷卻的溫度管理，而提高風力發電裝置1的可靠性 〇 和耐久性。 氣流形成裝置20係被固定安裝在外罩5以及轉子頭 4，所以不必設置特別的可動機構，可簡化構造，低價地 製造。 此外，雖然本實施方式係藉由將位在水平位置A、C 的旁邊時的風扇21的旋轉數予以變小，以緩和形成朝水 平方向的氣流所帶來的影響，但是，也可以在位於水平位 置A、C的旁邊時，停止風扇21的旋轉。 ❿ 又，本實施方式中，風扇21的軸線與轉子頭4的旋 轉軸線L交叉的角度是選定爲大致呈直角，所以風扇21 在某一個位置上所送風的方向係與風扇21在旋轉180度 之後的位置上朝相反方向送風時的方向一致。這個交叉的 角度亦可選定爲：從大致直角往兩側傾斜的角度。如此一 來，可將風扇21所形成的氣流的方向朝向更爲需要的轉 子頭4的方向。另一方面，氣流與旋轉軸線l方向並不是 一致’因此氣流朝一定方向流動的效果將會降低。在重視 讓氣流朝一定方向流動的情況下，傾斜的程度是愈小愈好 -25- 201026951 雖然本實施方式是考慮到浮力而將空氣從外罩5側流 入到機艙3側的流入位置當作連通路9的上部區域，將氣 流形成裝置20所形成的氣流的方向從下側朝向上側，但 是並不侷限於這種方式。 亦即，機艙3與外罩5之間的空氣的出入，因爲有例 如：機艙3形狀的非對稱性以及因爲塔柱2的存在所導致 的外部壓力的不均等的各種因素，因此由機艙3來看，係 ❹ 存在著最適合吸入、吹出的位置。因此也可以調整氣流形 成裝置20上的風扇21的反轉位置，將該風扇21所形成 的氣流的方向配合這個最適合吸入、吹出的位置。 [第2實施方式] 其次，佐以第8圖〜第10圖來說明本發明的第2實 施方式。 本實施方式的風力發電裝置1與第丨實施方式的基本 參 結構是相同的’只有在氣流形成裝置的結構不同。因此， 在本實施方式中’只就這個不同點予以說明，並省略其他 部分的重複說明。 此外’與第1實施方式相同的構成要素都標註同一元 件符號，並省略其詳細的說明。 第8圖〜第10圖係顯示外罩5的內部及其週邊結構 的示意圖’第8圖係側面示意圖、第9圖以及第圖係 正面示意圖。 -26- 201026951 本實施方式的氣流形成裝置30係安裝在位於外罩5 的內部的轉子頭4的前端部與外罩5的前端部之間的空間 ，亦即’安裝在外罩5的內部空間。 氣流形成裝置30係具備有：風扇（送風構件）31、 在旋轉軸上安裝著風扇31且用來旋轉驅動風扇31的馬達 33、將風扇31以及馬達33予以安裝在外罩5內的安裝構 件3 5、重錘3 7。 © 安裝構件35係呈可包覆風扇31的大致圓筒形狀，在 其厚度方向的大致中間位置具備有支承軸39。 支承軸39係沿著旋轉軸線l延伸，其兩個端部係可 旋轉地被外罩5以及轉子頭4所支承。 重錘37係如第8圖以及第9圖所示般地，在安裝構 件3 5上之靠近馬達3 3側的這一面，沿著旋轉軸線L，中 間隔著馬達3 3安裝有2個重錘3 7。 馬達3 3係受到未圖示的控制部控制成朝向一定的方 β 向旋轉。 如此一來，風扇31係朝一定方向旋轉，從馬達33朝 向風扇3 1進行送風。 氣流形成裝置30係安裝在外罩5以及轉子頭4上， 因此係隨著外罩5以及轉子頭4的旋轉而朝向旋轉方向移 動。 氣流形成裝置30係被支承成可朝向旋轉軸線L的外 圍自由旋轉，所以即使朝向旋轉方向移動，重錘37也都 是以一直保持在下方位置的方式在支承軸39的外圍進行 -27- 201026951 旋轉（自轉）。 如此一來，相對於風扇31係中間隔著支承軸39而位 於與重錘37同一方向上的馬達· 33將會一直保持在下方的 位置。 接下來，針對於由上述的結構所構成的風力發電裝置 1的動作，將以說明氣流形成裝置30的動作爲主。 從轉子頭4的旋轉軸線L方向吹抵風車葉片6的風力 使得轉子頭4朝向旋轉軸線L外圍旋轉的話，風車葉片6 Q 將以旋轉軸線L爲中心，朝向例如：時鐘外圍的圓周方向 移動。氣流形成裝置30則是因爲馬達33的旋轉，而使風 扇3 1形成從馬達3 3側朝向風扇3 1側的空氣氣流。 例如：第8圖以及第9圖所示般地，當風車葉片6a 位在往上方延伸的位置時，氣流形成裝置30因爲重錘37 位在下方的緣故，馬達33相對於風扇31係處在下方的位 置。形成從馬達3 3側朝向風扇3 1側的空氣氣流之風扇 3 1係朝向上方送風。 ❹ 風車葉片6a更進一步朝向時鐘外圍方向旋轉的話， 因爲氣流形成裝置30係以讓重錘37 —直保持在下方位置 的方式在支承軸39的外圍旋轉，因此風扇31係能夠以一 直朝向上方的方式進行送風。例如：第10圖所示般地， 當風車葉片6a旋轉180°而變成朝下方延伸的位置時，氣 流形成裝置30將會在支承軸39的外圍做180°的自轉，而 維持著讓重錘37位於下方的姿勢，因此風扇31係朝向上 方進行送風。 -28- 201026951 是以，即使外罩5以及轉子頭4進行旋轉’氣流形成 裝置30還是以讓重錘37 —直位在下方的方式在支承軸 39的外圍旋轉，因此能夠讓風扇31所形成的空氣氣流一 直朝向上方。 因此，風扇31係可在對於機艙3大致一定的方向上 形成氣流。氣流形成裝置3 0係在外罩5的內部形成從下 方朝向上方的氣流，在外罩5的內部的空氣的流通得以良 φ 好地進行。 藉此，可以有效率地將外罩5內部予以冷卻。此外’ 將外罩5內的傾角驅動裝置12等予以冷卻而受到暖化後 的高溫空氣會利用其浮力的增加而被朝向上方引導’與這 種現象相輔相成，將可更進一步有效地促進空氣的流通。 氣流形成裝置30所形成的氣流係對於機艙3從下方 往上方朝向大致一定的方向流動之故，氣流的下游側係與 形成在連通路9的上部的從外罩5側往機艙3側流動的區 ® 域一致。氣流的上游側係與形成在連通路9的下部的從機 艙3側往外罩5側流動的區域一致。 藉此，可以讓形成在外罩5的內部與機艙3的內部之 間的空氣的循環順暢地進行，因此可更有效率地將外罩5 內部予以冷卻。 以這種方式可有效率且確實地將外罩5內予以冷卻之 故’可令傾角驅動裝置12的控制機器類正常地作動而使 得發電持續地進行。 隨著風力發電裝置1的大型化，可藉由對於外罩5內 -29- 201026951 部進行冷卻的溫度管理，而提高風力發電裝置1的可靠性 和耐久性。 氣流形成裝置30係因爲支承軸39可自由旋轉地安裝 在外罩5以及轉子頭4上，只要將重錘37掛裝在安裝構 件35的馬達33側，即可確實地讓空氣氣流的方向保持一 定，因此構造簡單而可低價地製造。 又，因爲送風方向也就是風扇31的軸線係與轉子頭 4的旋轉軸線L大致正交，所以在風車葉片6之隔著旋轉 @ 軸線L的位置上的風扇31所形成的空氣氣流的方向係保 持一致地從正下方朝向正上方。 氣流形成裝置30的支承軸39係被配置成沿著轉子頭 4的旋轉軸線L之故，可以使得因旋轉的變動所引起的影 響變少。 又，在本實施方式中，風扇31的軸線與轉子頭4的 旋轉軸線L交叉的角度雖然被選定爲大致直角，但是這個 交叉的角度亦可以是從正交往兩側傾斜的角度。如此一來 ® ，例如：可將風扇31所形成的空氣氣流的方向朝向更爲 需要的轉子頭4的方向。 根據本實施方式，雖然氣流形成裝置30係利用重錘 37而可自動地調整姿勢，但也可以採用其他適合的構造 的驅動機構來調整姿勢。 如此一來，係可以隨著外罩5以及轉子頭4的旋轉， 來控制驅動機構以調整氣流形成裝置3 0的姿勢之故，能 夠使得風扇31所形成的空氣氣流的方向保持在大致一定 -30- 201026951 的方向。 例如：機艙3與外罩5之間的空氣的出入，因爲有： 機艙3形狀的非對稱性以及因爲塔柱2的存在所導致的外 部壓力的不均等的各種因素，因此由機艙3來看，係存在 著最適合吸入、吹出的位置。這個空氣氣流的方向係可隨 意地設定，因此可將氣流形成裝置30所形成的氣流的方 向配合這個最適合吸入、吹出的位置。 鲁 [第3實施方式] 接下來，將使用第11圖〜第15圖來說明本發明的第 3實施方式。 本實施方式的風力發電裝置1，與第1實施方式的基 本結構是相同的’只有在氣流形成裝置的結構不同。因此 ，在本實施方式中’只就這個不同點予以說明，並省略其 他部分的重複說明。 ® 此外’與第1實施方式相同的構成要素都標註同一元 件符號，並省略其詳細的說明。 第11圖係顯示氣流形成裝置40的結構成的正面示意 圖。第12圖係顯示氣流形成裝置40的結構的側面示意圖 。第13圖〜第15圖分別係顯示在與第n圖不同的旋轉 位置上的氣流形成裝置40的結構的正面示意圖。 本實施方式的氣流形成裝置40係安裝在：外罩5的 內部的轉子頭4的前端部與外罩5的前端部之間的空間， 亦即安裝在外罩5的內部空間。 -31 - 201026951 氣流形成裝置40係具備有：被固定安裝在外罩5的 內部的具有圓形截面之呈筒狀的固定通風管41、被固定 安裝在固定通風管41的內部的風扇43 (送風構件）、可 擺動地安裝於固定通風管41的一端部的第i可動通風管 (第1可動通風管）45、可擺動地安裝於固定通風管41 的另一端部的第2可動通風管（第2可動通風管）47。 固定通風管41被設置成：其長軸方向係與轉子頭4 的旋轉軸線L大致正交（交叉），且旋轉軸線l通過長 @ 軸方向以及開口部的大致中央位置。亦即，隨著外罩5以 及轉子頭4的旋轉，固定通風管41的長軸方向係以36〇。 變化的方式在旋轉軸線L的外圍進行旋轉。 風扇43係以朝向固定通風管41的長軸方向上的其中 一個方向形成空氣氣流的方式，被固定安裝在固定通風管 41的長軸方向上的大致中間的位置。 第1可動通風管45係呈筒狀具有圓形截面，係被安 裝在風扇43所形成的空氣氣流的流動方向的下游側端部 G 的固定通風管41，以形成與該固定通風管41相連通的流 路。 第1可動通風管45係在其中一端部具備第1開口部 49。第1可動通風管49的另一端部係可自由旋轉地被支 承於固定通風管41，並且與固定通風管41相連通。 在相對於第1可動通風管45上的第1開口部49的相 反側端部’安裝著第1重錘51。 此外，固定通風管41、第1可動通風管45以及第2 -32- 201026951 可動通風管47的截面形狀並不限於圓形，亦可選定爲所 期望的形狀。 第1可動通風管45雖然是隨著固定通風管41的旋轉 而朝向旋轉方向移動，但是因爲是以可自由旋轉的方式支 承在固定通風管41上，因此即使是朝向旋轉方向移動時 ，也都是以讓重量較重的第1重錘51 —直保持在下方位 置的方式，對於固定通風管41進行旋轉（擺動）。 φ 藉此，中間隔著擺動中心之位於與第1重錘51相反 方向上的第1開口部49係一直位於朝向上方的位置。 第2可動通風管47係呈筒狀具有圓形截面’係被安 裝在位於風扇43所形成的空氣氣流的流動方向的上游側 端部的固定通風管41，以形成與該固定通風管41相連通 的流路。 第2可動通風管47的其中一端部係具有第2開口部 53。第2可動通風管47的另一端部係可自由旋轉地被支 ® 承在固定通風管41，並且係與固定通風管41相連通。 在第2可動通風管47上的第2開口部53’安裝著複 數個例如：2個第2重錘55 ° 第2可動通風管47雖然是隨著固定通風管41的旋轉 而朝向旋轉方向移動，但是’因爲是可自由旋轉地支承在 固定通風管41上，所以即使是朝向旋轉方向移動’也都 是以讓重量較重的第2重鍾55 一直保持在下方位置的方 式’對於固定通風管41進行旋轉（擺動）° 如此一來，第2開口部53 —直都位於朝向下方的位 -33- 201026951 置。 接下來，針對由上述的結構所構成的風力發電裝置1 的動作，主要係說明氣流形成裝置40的動作。 從轉子頭4的旋轉軸線L的方向吹抵風車葉片6的風 力，令轉子頭4朝向旋轉軸線L的外圍旋轉的話，風車葉 片6將會以旋轉軸線L作爲中心’例如：朝向時鐘外圍的 圓周方向移動。根據氣流形成裝置40 ’風扇43係形成了 從第2可動通風管47側朝向第1可動通風管45側的空氣 φ 氣流之故，風扇43係將從第2開口部53吸進來的空氣經 由第2可動通風管47、固定通風管41以及第1可動通風 管45而從第1開口部49放出。 如第11圖以及第12圖所示般地，當固定通風管41 保持水平，而第1可動通風管45位在左側的位置時，第 1可動通風管45因爲第1重錘51位於下方之故，第1開 口部49就朝向上方開口。第2可動通風管47則是因爲第 2重錘位於下方之故，第2開口部53係朝下方開口。 〇 風扇43係將從第2開口部53吸進來的空氣經由第2 可動通風管47、固定通風管41以及第1可動通風管45 而從第1開口部49放出，因此，風扇43係從下方吸入空 氣而朝上方送風。 當風車葉片6a更進一步朝向時鐘外圍方向旋轉的話 ，固定通風管41將會隨之朝向旋轉軸線L的外圍旋轉， 依序地變成如第13圖〜第15圖所示的位置。 此時，第1可動通風管45，因爲受到第1重錘51要 -34- 201026951 往下方移動的作用而能夠一直維持著第1開口部49朝向 上方開口的狀態。 並且，第2可動通風管47，則是受到第2重錘55要 往下方移動的作用而能夠一直維持著第2開口部53朝向 下方開口的狀態。 因此，氣流形成裝置40雖然在寬度方向上的位置會 發生變動，但還是可以在從下方朝上方的大致一定的方向 〇 上形成氣流。 是以，氣流形成裝置40係在外罩5的內部，形成大 槪是從下方朝向上方的氣流之故，可讓外罩5的內部的空 氣的流通變得更良好。 藉此，可有效率地將外罩5內部予以冷卻。此外，將 外罩5內的傾角驅動裝置12等予以冷卻而受到暖化後的 高溫空氣會利用其浮力的增加而被朝向上方引導，與這種 現象相輔相成，將可更進一步有效地促進空氣的流通。 Φ 又，氣流形成裝置40所形成的氣流係對於機艙3從 下方往上方朝向大致一定的方向流動之故，氣流的下游側 係與形成在連通路9的上部的從外罩5側往機艙3側流動 的區域一致。氣流的上游側係與形成在連通路9的下部的 從機艙3側往外罩5側流動的區域一致。 藉此，可以讓形成在外罩5的內部與機艙3的內部之 間的空氣的循環順暢地進行，因此可更有效率地將外罩5 內部予以冷卻。 以這種方式可有效率且確實地將外罩5內予以冷卻之 -35- 201026951 故，可令傾角驅動裝置12的控制機器類正常地作動而使 得發電持續地進行。 隨著風力發電裝置1的大型化’可藉由對於外罩5內 部進行冷卻的溫度管理，而提高風力發電裝置1的可靠性 和耐久性。201026951 VI. Description of the invention:  [Technical Field According to the Invention] The present invention relates to a wind power generator that generates electric power using a wind turbine that can convert wind power of natural energy into a rotational force.  [Prior Art] A wind power generator that can generate electricity using wind energy of natural energy has been known. The wind power generation device is mounted on a nacelle that is placed on a pillar. Settings: a rotor head with a windmill blade installed, a main shaft that is coupled to rotate integrally with the rotor head, A speed increaser that is coupled to a main shaft that rotates when the wind turbine blade is subjected to wind power, The generator driven by the shaft output of the speed increaser. The rotor head is covered by a cover, In order to protect the rotor head from rain and the like.  In the wind power generation device of this structure, Because of the rotation of the rotor head and the main shaft of the windmill blade that can convert the wind into a rotational force, And the axis output is generated, Then, the shaft output after the speed increase is transmitted to the generator via the speed increaser connected to the main shaft. therefore, The shaft output obtained by converting wind power into rotational force is used as the driving source of the generator. Wind power is used as the power of the generator to generate electricity.  The interior of the cabin is housed with, for example: Speed increaser, A machine that generates heat when it is operated, such as a generator. therefore, The system uses, for example: Forming an air intake port and an air exhaust port, Various types of cooling structures such as a cooling structure that ventilates the interior of the nacelle to prevent temperature rise by a fan operated by the windmill.  -5- 201026951 Again, The inside of the rotor head is housed with, for example: An inclination control device such as a tilt angle control device that can quickly and precisely change the inclination angle of a wind turbine blade in response to a change in wind speed, For example, by: a drive device such as a hydraulic pump driven by a motor, a control device such as a control panel for performing tilt control, It belongs to a machine that generates heat. To ensure the reliability of these machines, The issue of cooling must be considered.  in the past, Allows natural convection of air between the interior of the nacelle and the interior of the enclosure @ to cool the space inside the enclosure.  In addition, The technical solution proposed is as disclosed in Patent Document 1, On the outer casing surrounding the heat-generating electrical components disposed within the rotor head, Install the heat sink, The heat sink is planted with a number of heat sink fins. The air is rotated by the fan rotating with the rotation of the hub to cool the heat sink.  [Prior Art Document] 专利 [Patent Document 1] [Patent Document 1] US Patent No. 723 5 895 [Disclosure] [Problems to be Solved by the Invention] However, The wind power generation device corresponds to the large-scale power generation in recent years. Windmill blades tend to become larger. therefore, The output of the machine type set in the rotor head is also increased. Thus as the output increases,  -6- 201026951 The heat generation of the machine type has also increased.  This increase in heat generation will cause the internal temperature of the rotor head to rise.  So for by: For control machines that consist of electrical and electronic components that set the temperature management of the environment, More in a harsh situation.  Because the front of the inside of the enclosure is a confined space, Therefore, it is difficult to let air circulate inside. therefore, If it is a structure that connects the inside of the cabin to the inside of the enclosure and allows the air to naturally circulate, Almost all of the hot air in the air after the temperature rises due to the heat generated in the rotor head Φ is maintained in a stationary state in place. Therefore, sufficient cooling cannot be performed.  also, Even if the method disclosed in Patent Document 1 is employed, The heat dissipated by the heat sink remains inside the rotor head. Therefore, the heat dissipation efficiency is deteriorated due to the accumulation of heat. It will become impossible to perform sufficient cooling.  The present invention is in view of the above circumstances, The object of the invention is therefore to provide: Wind power plant, Forming an airflow inside the enclosure that allows air to circulate efficiently between the nacelle. Therefore, it is possible to efficiently perform the wind power generation device that cools the inside of the casing β.  [Technical means for solving the problem] In order to solve the above problems, the present invention has been made. The following technical means are used.  that is, A wind power generation device of one aspect of the present invention is provided with: a rotor head with a windmill blade installed, a cover for covering the rotor head,  Storing a nacelle of a power generating device connected to the rotor head, And let the air flow through the wind power generation device 201026951 between the inside of the outer cover and the inside of the nacelle, The inside of the aforementioned cover has: An air flow forming device for forming a gas stream.  Such a wind power generation device, The outer cover and the rotor head are rotatably supported in the nacelle by a main shaft fixed to the rotor head. In operation,  Once the windmill blades are subjected to wind, On the windmill blades there is a force that causes the rotor head to rotate towards the periphery of the axis of rotation. The rotor head will be rotationally driven towards the periphery of the spindle. This rotational driving force is increased by the speed increaser and transmitted to the generator. Because the generator is driven, it will be sent @电.  at this time, Relative to the cabin that maintains a certain posture, The cover and the rotor head are rotating, Therefore, the relative positional relationship between the nacelle and the outer cover and the rotor head is constantly changing.  According to the present invention, Air is circulated between the inside of the enclosure and the interior of the cabin. This is the air flow into the (inflow) from the nacelle towards the outer cover. The warmed air is discharged (discharge portion) from the outer casing toward the nacelle. As a result, The inside of the cover is cooled. This inflow part 〇 and the discharge part, From the cabin, There is the most appropriate position.  According to this aspect, Because it is inside the cover: An airflow forming device for forming a gas stream, Therefore, the air flow formed by the air flow forming device can be utilized. Allow the air inside the enclosure to circulate well. With this, The inside of the enclosure can be efficiently cooled.  Further, the airflow formed by the airflow forming device flows toward the nacelle in a substantially constant direction. So by letting the upstream side of the airflow correspond to the inflow, Let the downstream side correspond to the discharge section, The air circulation formed between the rotor head -8- 201026951 and the nacelle can be smoothly carried out.  With this, The inside of the enclosure can be cooled more efficiently.  Yes, Because the inside of the enclosure can be cooled efficiently and reliably, Therefore, the control machine can be operated normally and the power generation can be continuously performed. With the increase in the size of wind power plants, Performing temperature management by cooling the inside of the rotor head, And can improve the reliability and durability of the wind power generation device. It is preferable that the airflow forming means forms the airflow from the lower side toward the upper side φ.  a gas such as air, As soon as the temperature rises, it will swell. Therefore, the weight per unit volume will become smaller. that is, Buoyancy will get bigger.  According to the present invention, The air flow forming device forms a gas flow from the lower side toward the upper side. Therefore, the air in which the temperature in the outer casing is cooled and the temperature is raised is increased. Will be directed upwards. In this way, the air with greater buoyancy is pushed toward the upper side. Therefore, air can be circulated efficiently.  In this case, The inflow section that allows the lower temperature air to flow from the nacelle toward the outer cover is placed on the lower side. It is preferable that the discharge portion for discharging the warmed air from the outer cover toward the nacelle is provided on the upper side.  In the above aspect, The structure of the airflow forming device can also be made to have: A blower member that can form an air flow in the air blowing direction.  In this situation, The air blowing member may also be: The inside of the outer cover is fixedly mounted so that the air blowing direction intersects with the axis of the rotor head. And selectively on either side of the sides along the aforementioned blowing direction, An air flow is formed.  Because in this way, the air supply member is fixedly mounted inside the housing as 201026951: Let the air supply direction intersect the axis of the rotor head, therefore, The air supply member rotates with the cover and the rotor head. It rotates integrally toward the axis of the rotor head. As long as an air flow is formed on one side of the air supply direction,  The direction of the air flow will change throughout the 360 degrees.  According to the structure of the present invention, The air blowing member selectively forms an air flow on one side of both sides along the air blowing direction. Therefore, the air supply member can be made to be located, for example: Positioned opposite each other across the axis of the rotor head (in other words, When the position of the rotation phase is 180 degrees apart, the air supply side @ is different from each other. So set up, The direction of the air flow in these two positions will become the same, Therefore, the direction in which the air blowing direction is sent is reversed by a predetermined position in the rotational direction. The direction of the air flow can be suppressed, for example: Within 1 80 degrees. also, In the position of the front and back of this reversal position, If the air supply member stops blowing air, The direction of the air flow can be limited to a narrower range of angles.  therefore, The air supply member can form: Maintain airflow in a generally directional direction for the nacelle. And the air supply member is fixedly mounted, So there is no need to set a special movable mechanism. Therefore, the structure can be simplified, Can be manufactured at low prices.  In addition, The angle at which the air supply direction intersects the axis of the rotor head is closer to the right angle. This is because the direction in which the air blowing member blows air at a certain position coincides with the direction in which the air is blown in the opposite direction at a position rotated by 180 degrees.  also, Based on the influence of the change in rotation, the influence will be small.  Therefore, it is preferable to arrange the air blowing member so as to be close to the axis of the rotor head.  In the above structure, The air blowing member may also be configured to: The aforementioned -10-201026951 wind direction intersects the axis of the aforementioned rotor head, Further, the inside of the outer cover is attached so as to be rotatable around the rotation axis substantially orthogonal to the air blowing direction.  Yes, because the air supply member is configured to: The blowing direction intersects the axis of the front rotor head. Therefore, the air blowing member integrally rotates toward the periphery of the axis of the rotor head as the casing and the rotor rotate. In a fixed state, The air supply direction of the air supply member changes over the entire 360 degrees. © In this structure, The air blowing member is attached to the inside of the housing so as to be rotatable toward the periphery of the rotation axis substantially intersecting the blowing direction. So if it rotates around the axis of rotation, It is possible to change the direction of the air supply. For example, if the angle at which the air blowing member is rotated toward the periphery of the axis of the rotor head is substantially the same as the angle at which the wind member is about to rotate toward the periphery of the rotation axis,  The direction of the air flow formed by the wind member is not biased toward this angle.  It is roughly kept constant. therefore, The blower member can form an air flow in a substantially uniform direction with respect to the machine.  β as a means of rotating the air blowing member, Can be used, for example:  a position on the air blowing member opposite to the direction in which the air flow is formed when viewed from the rotation axis, Install the weight. As a result, When the air blowing member rotates toward the periphery of the axis of the rotor, The air supply member will keep the weight in the lower position. Rotating toward the periphery of the axis of rotation, therefore,  The air flow formed by the air blowing member can always be directed upward. It is possible to reliably maintain the direction of the air flow by simply installing the weight. The construction is simple and can be manufactured at low cost.  In addition, The angle at which the air supply direction intersects the axis of the rotor head is more than that. The 〇 in the head is sent and the cabin is held in the phase. -11 - 201026951 The right angle is better. This is because the direction in which the air blowing member blows the air at a certain position coincides with the direction in which the air is blown at a position rotated by 180 degrees.  also, Based on the fact that the influence due to the change in rotation is small,  Preferably, the air supply member is disposed adjacent the axis of the rotor head.  In the above structure, The airflow forming device may also have: It is cylindrical and fixedly mounted inside the outer cover. The long axis direction is a fixed air duct crossing the axis of the rotor head; Fixed in the middle of the long axis of the fixed ® air duct, a blowing member capable of forming an air flow in one of the long axis directions; a downstream end portion of the air flow that is swingably mounted to the fixed air duct, And forming a first movable ventilation pipe of the extension portion of the fixed ventilation pipe; And it is configured to:  The first movable air duct corresponds to the positional movement of the fixed air duct due to the rotation of the outer cover and the rotor head. And swinging,  The blowing direction of the air flow is directed to the downstream side in the substantially constant direction.  ® according to this configuration, The air flow formed by the air supply member flows along the fixed air duct. Blow out through the first movable air duct.  The fixed ventilation duct is fixedly mounted inside the enclosure, Therefore, the fixed ventilation duct integrally rotates toward the periphery of the axis of the rotor head as the housing and the rotor head rotate. As a result, The direction of the air flow through the fixed air duct changes throughout the 360 degrees.  at this time, The first movable air duct corresponds to the positional movement of the fixed air duct caused by the rotation of the outer cover and the rotor head, And the airflow -12-201026951 is blown out toward the downstream side in a substantially certain direction, Therefore, an air flow can be formed in a direction substantially constant for the nacelle.  In the above configuration, The first movable duct can also be:  The opposite side of the air outlet of the air flow is spaced apart from the center of the swing, The first weight is installed.  As a result, When the fixed air duct rotates toward the periphery of the axis of the rotor head, The first movable air duct swings in such a manner that the first weight is kept at the lower position. So keep the air outlet of the air flow up all the way up "  In the above configuration, Can also be made into: The airflow forming device is provided with: Swingably mounted to the upstream end of the aforementioned air flow of the fixed vent tube, a second movable vent tube forming the extension of the aforementioned fixed vent tube, The second movable air duct is oscillated corresponding to the positional movement of the fixed air duct due to the rotation of the outer cover and the rotor head. The suction direction of the air flow is directed toward the upstream side of the aforementioned direction in a certain direction.  According to this structure, The second movable air duct is oscillated corresponding to the positional movement of the fixed air duct caused by the rotation of the outer cover and the rotor head, Because the suction direction of the air flow is directed to the upstream side in a substantially constant direction, Therefore, air can be taken in from the upstream side in a substantially constant direction to the nacelle. It can complement the function of the above first movable air duct. It is true that an air flow is formed in a substantially constant direction to the nacelle.  In the above structure, In the second movable vent pipe, a second weight may be attached to the suction port side of the air flow.  -13- 201026951 So, When the fixed air duct rotates toward the periphery of the axis of the rotor head, The second movable air duct swings in such a manner that the second weight is kept in the down position. Therefore, the suction port of the air flow can be kept facing downward.  In the above aspect, The structure of the foregoing airflow forming device may also be: At least one through hole portion penetrating the side surface of the outer cover, And an opening and closing member for opening and closing the through hole portion.  Because the windmill blades of the wind power generator are always facing the windward direction, Therefore, the outer cover is also facing the wind. When the through hole portion is opened, The wind will flow into the inside of the casing through the through hole. When the through hole is closed, The wind does not flow into the inside of the casing through the through hole portion.  Because the through hole portion is provided on the side of the outer cover, Therefore, when the outer casing rotates toward the periphery of the axis of the rotor head, It will move its position in a circular motion. ° If you use the opening and closing member, Opening the through hole 特定 in a specific range on the circumference, If the through hole is closed in other ranges, The wind will flow into the inside of the casing through the through hole portion in a certain range of the circumference. Instead, an air flow toward the other side can be formed. that is, In this way, The gas flow forming device is capable of forming an air flow in a substantially constant direction to the nacelle.  In addition, a position where the through hole portion is opened, Intrusion based on rainwater, etc. is relatively small, And the direction of the airflow is relatively good, It is preferably selected in the lower portion of the outer cover.  In addition, A plurality of through holes may be provided in the circumferential direction. So 14-201026951, The air flow can be formed more continuously.  In the above structure, The opening and closing member can also be made into: With a cover and a third weight, The cover is a plate, The two sides are used as a closed surface and an open surface, respectively. Positioned closer to the side of the open face than the center position in the thickness direction, Rotatablely supported by the aforementioned outer cover; The third weight is mounted on the aforementioned open surface. When the closed surface faces the through hole portion, The through hole portion is closed.  φ so, The cover is rotated in such a way that the third weight is kept in the down position. That is, when the opening and closing member is located at the lower portion of the outer cover,  The third weight is below, So it is above the closed surface, that is, on the inner side of the outer cover. The open surface faces the through hole. In this state,  If the outer cover rotates toward the periphery of the axis of the rotor head beyond the horizontal position,  The open side is located on the upper side than the closed side. that is, It becomes the state in which the third weight is on the top, The cover will rotate due to the movement of the third weight downward. In this way, the closed surface is opposite to the through hole φ. Therefore, the through hole portion is closed by the closed surface.  Yes, The position of the through hole is opened when it is located at the lower half of the position. Closed when it is in the upper half of the position, Therefore, an air flow from the lower side toward the upper side can be formed.  [Effect of the Invention] According to the present invention, Because it is inside the cover: An airflow forming device that forms an airflow in a direction substantially constant to the casing, Therefore, it is possible to efficiently cool the inside of the cover. -15- 201026951 Also, The airflow formed by the airflow forming device flows in a direction substantially constant for the nacelle, therefore, The air circulation formed between the rotor head and the nacelle can be smoothly performed.  Because in this way it is possible to efficiently and surely cool the inside of the enclosure, Therefore, the control machine can operate normally and continuously generate electricity. With the increase in the size of wind power plants, Execution by cooling the temperature management inside the rotor head, It is possible to improve the reliability and durability of the wind power generator. [Embodiment] An embodiment of the wind power generator of the present invention will be described with reference to the drawings.  [First Embodiment] A first embodiment of the present invention will be described with reference to the first embodiment to the seventh embodiment. Fig. 1 is a side view showing the overall schematic configuration of the wind power generator 1 according to the first embodiment.  The wind power generator 1 is provided with: Pillar 2 erected on foundation B, a nacelle 3 disposed at an upper end of the tower 2 a rotor head 4 that is disposed on the periphery of the nacelle 3 that is rotatable toward a substantially horizontal axis of rotation (axis of the rotor head) L, Covering the outer cover 5 of the rotor head 4, a plurality of windmill blades 6 radially mounted on the periphery of the rotation axis L of the rotor head 4, A power generating device 7 that generates electric power by the rotation of the rotor head 4.  -16- 201026951 In addition, In the present embodiment, This is illustrated by the example in which three windmill blades 6 are provided. For the convenience of explanation, When it is used to specify which windmill blade 6 is at the bottom, The lowercase English letter "a" will be attached.  "b",  "c" to make a difference.  The number of windmill blades 6 is not limited to three pieces. Can also be applied to 2 pieces, Or more than 3 pieces, It is not particularly limited.  Tower 2 is as shown in Figure 1, The column has a columnar structure extending upward from the base B (above the e1 diagram), E.g: A structure in which a plurality of units are connected in the vertical direction can be used.  A nacelle 3 is provided at the uppermost portion of the tower 2. When the tower 2 is composed of a plurality of units, The nacelle 3 is placed on the unit that is placed at the uppermost portion.  The cabin 3 is shown in Figure 3, The main shaft 8 fixed to the rotor head 4 is rotatably supported.  In the interior of the cabin 3, For example, as shown in Figure 1, Storage is set to generate electricity © Equipment 7, The power generation equipment 7 is: The generator 11 is connected via a speed increaser 10 coaxial with the rotor head 4.  that is, After the rotation of the rotor head 4 is increased by the speed increaser 10, Used to drive the generator 11, Thereby, the generator output W can be obtained from the generator 11.  In the interior of the cabin 3, Because of the speed increaser 10, The heat generated by the rotation of the generator 11 or the like, And heat generated by a transformer (not shown), etc. This causes the internal temperature to rise.  therefore, Although not shown here, But the system is set up with: Transformer -17- 201026951 cooler, Lubricating oil cooler for cooling, And in the appropriate place in the cabin 3, In order to cool the interior, it is cooled. There is an air intake and exhaust port with a cooling fan.  therefore, The interior of the cabin 3, It is in a lower temperature state because of the cooling of the internal air and the ventilation.  Fig. 2 is a partially enlarged view showing the structure of the rotor head 4 of Fig. 1. 3 to 6 show the outline of the inside of the outer cover 5 and its surrounding structure, 3 and 5 are side views, Figure 2 and Figure 6 are front views.  On the rotor head 4, As shown in Figure 1 and Figure 2, On the periphery of its rotation axis L, a plurality of windmill blades 6 radially mounted, The periphery is covered by the outer cover 5.  On the rotor head 4, Corresponding to each windmill blade 6, Set in a one-to-one manner: The wind turbine blade 6 can be rotated toward the periphery of the axis of the wind turbine blade 6, The device 12 is driven at an inclination to change the inclination of the wind turbine blade 6.  Inside the rotor head 4, The hydraulic device, the control panel, and the like that constitute the tilt drive device 12 are housed. Among these machines, Hydraulic equipment such as oil pumping is a heating element. In addition, The electrical and electronic parts of the control machine that make up the control panel, It is subject to the temperature conditions of the setup environment. also, For these machines, A invasion of rain, etc. is not a good thing, Therefore, the outer cover 5 must have airtightness.  Between the outer cover 5 and the nacelle 3, Between the interior of the outer cover 5 and the interior of the nacelle 3, To form a communication path 9 that allows air to circulate. In the connected road 9, The system is installed, for example: Perforated metal sheets, Partition of mesh members, etc. -18 - 201026951 , The inside of the outer cover 5 and the two spaces inside the nacelle 3 are partitioned in an air permeable communication state (not shown).  Although it is only as long as there is a connected road 9, it is fine. However, it is also possible to have a circulation promotion means that can actively promote circulation.  As a means of promoting this cycle, For example, as shown in Figure 3, Alternatively, the casing 3 located at the upper portion of the communication path 9 may be provided with: A fan 18 φ that can draw a relatively high temperature of air in the outer casing 5 into the airflow in the nacelle 3 can be formed. In addition, It is also possible to have the nacelle 3 located at the lower portion of the communication path 9 at the same time: A fan 19 that can push the lower temperature air in the nacelle 3 into the air flow in the outer casing 5 can be formed.  In this situation, The fan 18 and the fan 19 may be provided with only one of them.  The fan 18 and the fan 19 can also be driven by gears that mesh with gears mounted on the rotatable rotor head 4 or spindle 8. As a result, Even if a drive source such as a motor is not separately provided, The fan 18 and the fan 19 can also be actuated by means of a mechanical mechanism.  In addition, As a means of promoting this cycle, Not limited to fan 18, 1 9, It can also be, for example: A plurality of pieces of the wing-shaped guide member are in a range of about half of the circumference in the outer circumferential direction of the circular communication path 9, It is fixedly disposed on the side of the nacelle 3 at substantially the same inclination angle.  When the outer cover 5 and the rotor head 4 are rotated, The air inside the outer cover 5 will rotate, Guided by the guiding member, it is fed into the interior of the nacelle 3. The guiding member can perform relative rotational motion without dedicated power. The amount of air toward the nacelle 3 side can be increased via the communication path 9' of -19-201026951 formed between the outer casing 5 on the rotating side and the nacelle 3 on the fixed side.  Inside the outer cover 5, The space between the front end portion of the rotor head 4 and the front end portion of the outer cover 5, That is, the air flow forming device 20 is mounted in the inner space of the outer cover 5.  The airflow forming device 20 is provided with: Fan (air supply member) 21,  a motor 23 on which a fan 21 is mounted on a rotating shaft and the fan 21 can be rotationally driven, The fan 21 and the motor 23 are attached to the mounting member 25 in the outer cover 5.  · The airflow forming device 20 is as shown in Fig. 2, The center of the axis of the fan 21 is along the axis L6 of the wind turbine blade 6a, The fan 21 is located on the front end side of the wind turbine blade 6a. The motor 23 is disposed on the root side of the wind turbine blade 6a.  The air flow forming device 20 is fixedly mounted at a position where the rotational axis l passes through a substantially intermediate position in the thickness direction of the fan 21. that is, It is fixedly mounted such that the blowing direction of the fan 21 is substantially orthogonal (cross) to the rotation axis L.  10 Yes, Since the fan 21 is configured such that the blowing direction is orthogonal to the rotational axis L of the rotor head 4, Therefore, the fan 21 will integrally rotate toward the periphery of the rotation axis L following the rotation of the outer cover 5 and the rotor head 4. therefore, When the fan 21 is fixed to one side thereof, The air supply direction of the fan 21 will vary by 3 to 60 degrees.  The motor 23 is capable of forward rotation or reverse rotation by a control unit (not shown). With this, The fan 21 can also be rotated forward or reverse.  E.g: When the fan 21 is turning forward, The fan 21 blows air from the motor 23 toward the fan 21 as shown in Fig. 3 and Fig. -20-201026951, Fig. 4.  In addition, When the fan 21 is reversed, The fan 21 is as shown in Fig. 5 and Fig. 6, Air is blown from the fan 21 toward the motor 23.  Secondly, The operation of the wind power generator 1 configured by the above configuration will be described.  On the wind power generator 1, The wind that blows against the wind turbine blade 6 from the rotational axis L of the rotor head 4 is converted into power that rotates the rotor head 4 toward the periphery of the rotation ® axis L.  This rotation of the rotor head 4 is transmitted to the speed increaser 1 via the spindle 8. This rotation will be increased by the speed increaser 10, It is input to the generator 11, Power generation by the generator 11 is thus performed. The electric power generated by the generator 11 is a power required to be converted into a power supply target by using a voltage generator or the like. E.g: AC at a frequency of 50 Hz or 60 Hz.  Here, In order to at least be in the period of power generation, Let the wind act effectively on the windmill blade 6, By suitably rotating the nacelle 3 in a horizontal plane, The outer cover 5 and the rotor head 4 are oriented in the windward direction.  at this time, In the upper region of the communication path 9, The air flow from the inside of the outer cover 5 toward the nacelle 3 side is formed by the fan 18, On the other hand, the warm air which has been heated by the heat generated by the heating of the driving device 12 or the like is sucked from the outer cover 5 and sent to the nacelle 3 side.  With this, The internal pressure of the outer cover 5 is lowered, Therefore, the internal pressure of the nacelle 3 is relatively high. In the lower region of the communication path 9, The flow of lower-temperature air flowing from the side of the nacelle 3 having a higher internal pressure toward the inside of the outer casing 5 is formed. The inside of the outer cover 5 is cooled by the flow of this air.  -21 - 201026951 In addition, Even if the circulation promotion means such as the fan 18 is not used, It is still possible to form such a flow of air through the communication path 9. that is, In the outer cover 5, The higher temperature air moves upwards. To make up for this movement, In the lower region of the communication path 9, The lower temperature air flows from the side of the nacelle 3 toward the side of the outer casing 5. Because the internal pressure of the upper portion of the outer cover 5 becomes high, Therefore, in the upper region of the communication path 9, The higher temperature air flows from the side of the outer casing 5 toward the side of the nacelle 3.  however, Because the cover 5, The windmill blade 6 and the rotor head 4 are both rotated and rotated. Therefore, the flow of the air in the outer cover 5 does not necessarily coincide with the flow of the air passing through the communication path 9, The flow of air circulated through the communication path 9 becomes insufficient.  As a result, The internal space of the outer cover 5 is insufficiently cooled.  In the present embodiment, In order to solve this problem, An air flow forming device 20 is provided in the outer cover 5.  The operation of this airflow forming device 20 will be described below.  @ When the rotor head 4 rotates, The windmill blade 6 will be centered on the axis of rotation L, E.g: Moves in the circumferential direction toward the periphery of the clock.  at this time, The windmill blade 6a is for example: The way shown on the upper side of Figure 7, The posture changes. Windmill blades 6a are from: The horizontal position A extending from the rotor head 4 toward the left side when viewed from the direction of the wind direction, It is erected in order to become the upper position B extending upward (as shown in Fig. 3 and Fig. 4). Next, The wind turbine blade 6a is inclined to the right side in order to become a horizontal position C extending to the right side. Next,  -22- 201026951 When the rotor head 4 rotates again, the wind turbine blade 6a becomes the front end facing downward. The inclination becomes large and becomes the lower position D which extends downward (as shown in Figs. 5 and 6). then, The windmill blade 6a returns to the horizontal position A again, This change in posture is repeated.  The control unit changes the number of rotations of the motor 23, that is, the fan 21, as shown on the lower side of Fig. 7. that is, From the horizontal position A, after passing the upper position B and before reaching the horizontal position C, The motor 23 performs 〇 forward rotation. The fan 21 is directed from the motor 23 toward the fan 21. that is, Air is blown toward the front end side of the wind turbine blade 6a. The motor 23 maintains a predetermined number of rotations at an intermediate position. The position in the horizontal position A and the near horizontal position C gradually increases or decreases the number of rotations.  therefore, During this period, E.g: The state in the upper position B is as shown in Fig. 3 and Fig. 4, The front end of the windmill blade 6a is above the rotor head 4, That is, the position above the root of the windmill blade 6a, Therefore, the fan 21 is blown upward.  β in horizontal position A, When C is next to it, Although the fan 21 is blowing in the horizontal direction, However, in this part, the amount of air supply is reduced. Therefore, it is possible to suppress a large influence on the blowing direction.  on the other hand, From the horizontal position C, after passing the lower position D and before reaching the horizontal position A, The motor is reversed, The fan 21 is directed from the fan 21 toward the motor 23, that is, Air is blown toward the root side of the wind turbine blade 6a.  When the motor 23 is in the intermediate position, the predetermined number of rotations is maintained. Near the horizontal position A, When the position of C, The number of rotations is increased or decreased.  therefore, During this period, For example: The position of -23-201026951 in the lower position D is as shown in Fig. 5 and Fig. 6, Because the front end of the windmill blade 6a is located below the rotor head 4, That is, lower than the root of the windmill blade 6a, Therefore, the fan 21 is blown upward.  In horizontal position A, When C is next to it, Although the fan 21 is blowing in the horizontal direction, But in this part, Reduce the amount of air delivered, Therefore, it is possible to suppress a large influence on the direction of the air supply.  With this method, To distinguish between the position of the windmill blade 6a passing through the upper half subregion and the position passing through the lower half subregion. To reverse the blowing direction 风扇 of the fan 21, Therefore, the air flow formed by the fan 21 is in a plane orthogonal to the rotation axis L, Although it is tilted, But for cabin 3,  The big cockroaches are all from the lower side to the upper side.  Yes, The airflow forming device 20 forms an airflow from the lower side toward the upper side inside the outer cover 5, The circulation of the air inside the outer cover 5 can be performed satisfactorily. With this, The inside of the outer cover 5 can be cooled efficiently. This is because it is added: The high-temperature air that has been warmed after the inclination driving device 12 or the like in the outer cover 5 is cooled is increased by the buoyancy thereof. It can complement the air more efficiently.  Since the airflow formed by the airflow forming device 20 flows in a substantially constant direction from the lower side toward the upper side of the nacelle 3, the downstream side of the airflow and the upper portion of the communication passage 9 flow from the outer cover 5 side toward the nacelle 3 side. The area is consistent. The upstream side of the air flow coincides with the area formed on the lower side of the communication path 9 from the side of the nacelle 3 toward the side of the outer cover 5.  With this, The circulation of air formed between the interior of the outer cover 5 and the interior of the nacelle 3 -24 - 201026951 can be smoothly performed. Therefore, the inside of the outer cover 5 can be cooled more efficiently.  Yes, The cooling in the outer cover 5 can be performed efficiently and surely. Therefore, the control device of the tilt driving device 12 can be normally operated to continue the power generation.  With the increase in size of the wind power generator 1, Temperature management by cooling the inside of the outer cover 5, The reliability and durability of the wind power generator 1 are improved.  The airflow forming device 20 is fixedly mounted to the outer cover 5 and the rotor head 4, So there is no need to set a special movable mechanism. Simplifies construction, Made at a low price.  In addition, Although this embodiment is by placing the bit in the horizontal position A, The number of rotations of the fan 21 at the side of C is reduced. To mitigate the effects of airflow in the horizontal direction, but, Can also be in the horizontal position A, When C is next to it, The rotation of the fan 21 is stopped.  Oh, again, In this embodiment, The angle at which the axis of the fan 21 intersects the rotational axis L of the rotor head 4 is selected to be substantially at right angles. Therefore, the direction in which the fan 21 blows air at a certain position coincides with the direction in which the fan 21 blows air in the opposite direction at a position rotated by 180 degrees. The angle of this intersection can also be selected as: The angle from the generally right angle to the sides. In this way, The direction of the airflow formed by the fan 21 can be directed to the direction of the more desired rotor head 4. on the other hand, The airflow does not coincide with the direction of the axis of rotation l so that the effect of the airflow in a certain direction will be reduced. In the case of paying attention to the flow of air in a certain direction, The degree of inclination is as small as possible -25 - 201026951 Although the present embodiment is an inflow position in which air flows from the side of the outer cover 5 to the side of the nacelle 3 in consideration of buoyancy, it is regarded as an upper region of the communication path 9, The direction of the airflow formed by the air flow forming device 20 is from the lower side toward the upper side. But it is not limited to this way.  that is, The air in and out between the nacelle 3 and the outer cover 5, Because for example: The asymmetry of the shape of the nacelle 3 and various factors of the unequal external pressure caused by the presence of the column 2, So from the cabin 3, Department ❹ There is the most suitable for inhalation, Blow out the location. Therefore, the reverse position of the fan 21 on the airflow forming device 20 can also be adjusted. Matching the direction of the airflow formed by the fan 21 is optimal for inhalation, Blow out the location.  [Second Embodiment] Next, A second embodiment of the present invention will be described with reference to Figs. 8 to 10 .  The wind power generator 1 of the present embodiment is the same as the basic structure of the second embodiment. Only the structure of the airflow forming device differs. therefore,  In the present embodiment, 'only this difference is explained, Duplicate descriptions of other parts are omitted.  Further, the same constituent elements as those of the first embodiment are denoted by the same element symbol. Detailed descriptions thereof are omitted.  8 to 10 are schematic views showing the inside of the outer cover 5 and its peripheral structure. Fig. 8 is a side view showing Figure 9 and the figure are frontal schematics.  -26- 201026951 The airflow forming device 30 of the present embodiment is installed in a space between the front end portion of the rotor head 4 located inside the outer cover 5 and the front end portion of the outer cover 5, That is, it is mounted in the inner space of the outer cover 5.  The airflow forming device 30 is provided with: Fan (air supply member) 31,  a motor 31 on which a fan 31 is mounted on a rotating shaft and used to rotationally drive the fan 31, The mounting member 35 that mounts the fan 31 and the motor 33 in the outer cover 5, Heavy hammer 3 7.  © The mounting member 35 is formed in a substantially cylindrical shape that can cover the fan 31. A support shaft 39 is provided at a substantially intermediate position in the thickness direction.  The support shaft 39 extends along the rotation axis l, Its two ends are rotatably supported by the outer cover 5 and the rotor head 4.  The weight 37 is as shown in Fig. 8 and Fig. 9, On the side of the mounting member 35 near the side of the motor 3 3, Along the axis of rotation L, Two weights 3 7 are mounted in the middle of the motor 3 3 .  The motor 3 3 is controlled by a control unit (not shown) to rotate in a constant direction β.  As a result, The fan 31 rotates in a certain direction. Air is supplied from the motor 33 toward the fan 31.  The airflow forming device 30 is mounted on the outer cover 5 and the rotor head 4,  Therefore, it moves in the rotational direction in accordance with the rotation of the outer cover 5 and the rotor head 4.  The air flow forming device 30 is supported to be freely rotatable toward the outer circumference of the rotation axis L, So even if you move in the direction of rotation, The weight 37 is also rotated (rotated) by -27-201026951 on the periphery of the support shaft 39 in such a manner as to be kept at the lower position.  As a result, The motor 33, which is positioned in the same direction as the weight 37 with respect to the fan 31 in the support shaft 39, will remain in the lower position.  Next, With regard to the operation of the wind power generator 1 constituted by the above configuration, The operation of the airflow forming device 30 will be mainly described.  If the wind force of the wind turbine blade 6 is blown from the rotation axis L direction of the rotor head 4 such that the rotor head 4 rotates toward the periphery of the rotation axis L, The windmill blade 6 Q will be centered on the axis of rotation L. Orientation for example: The circumference of the clock moves in the circumferential direction. The airflow forming device 30 is due to the rotation of the motor 33. On the other hand, the fan 3 1 forms an air flow from the motor 3 3 side toward the fan 3 1 side.  E.g: As shown in Fig. 8 and Fig. 9, When the windmill blade 6a is located at an upward position, The airflow forming device 30 is because the weight 37 is below. The motor 33 is in a lower position relative to the fan 31. The fan 3 1 that forms an air flow from the motor 3 3 side toward the fan 3 1 side is blown upward.  ❹ If the windmill blade 6a is further rotated toward the periphery of the clock,  Since the air flow forming device 30 rotates around the support shaft 39 in such a manner that the weight 37 is held straight downward, Therefore, the fan 31 can supply air in such a manner as to face upward. E.g: As shown in Figure 10,  When the windmill blade 6a is rotated by 180° to become a position extending downward, The air flow forming device 30 will perform 180° rotation on the periphery of the support shaft 39. And maintaining the posture in which the weight 37 is located below, Therefore, the fan 31 is blown toward the upper side.  -28- 201026951 Yes, Even if the outer cover 5 and the rotor head 4 are rotated, the airflow forming device 30 is rotated around the support shaft 39 in such a manner that the weight 37 is positioned straight below. Therefore, the air flow formed by the fan 31 can be made to face upward.  therefore, The fan 31 is capable of forming an air flow in a substantially constant direction to the nacelle 3. The air flow forming device 30 forms an air flow from the lower side toward the upper side inside the outer cover 5, The circulation of the air inside the outer cover 5 is well performed.  With this, The inside of the outer cover 5 can be efficiently cooled. Further, the high-temperature air that has been warmed by the inclination driving device 12 in the outer cover 5 and is warmed by the buoyancy is guided upward by the increase in buoyancy, and complements this phenomenon. It will further promote the circulation of air more effectively.  The air flow formed by the air flow forming device 30 flows in a substantially constant direction from the lower side to the upper side of the nacelle 3, The downstream side of the airflow coincides with the zone ® field formed on the upper portion of the communication path 9 from the side of the outer cover 5 to the side of the nacelle 3. The upstream side of the airflow coincides with the region formed on the lower portion of the communication passage 9 from the side of the nacelle 3 toward the side of the outer casing 5.  With this, The circulation of air formed between the inside of the outer cover 5 and the inside of the nacelle 3 can be smoothly performed, Therefore, the inside of the outer cover 5 can be cooled more efficiently.  In this manner, the inside of the outer cover 5 can be efficiently and surely cooled, so that the control device of the tilt driving device 12 can be normally operated to cause the power generation to continue.  With the increase in size of the wind power generator 1, Temperature management for cooling -29-201026951 in the outer cover 5, The reliability and durability of the wind power generator 1 are improved.  The air flow forming device 30 is mounted on the outer cover 5 and the rotor head 4 so that the support shaft 39 is rotatably mounted. As long as the weight 37 is attached to the motor 33 side of the mounting member 35, You can surely keep the direction of the airflow a certain amount. Therefore, the structure is simple and can be manufactured at low cost.  also, Since the direction of the blowing direction, that is, the axis of the fan 31 is substantially orthogonal to the axis of rotation L of the rotor head 4, Therefore, the direction of the air flow formed by the fan 31 at the position where the wind turbine blade 6 is rotated by the @ axis L is uniformly maintained from the immediately lower side toward the upper side.  The support shaft 39 of the air flow forming device 30 is disposed along the rotational axis L of the rotor head 4, It is possible to reduce the influence caused by the fluctuation of the rotation.  also, In the present embodiment, Although the angle at which the axis of the fan 31 intersects the rotation axis L of the rotor head 4 is selected to be substantially a right angle, However, the angle of this intersection can also be an angle that is inclined from both sides of the positive interaction. So that ® , E.g: The direction of the air flow formed by the fan 31 can be directed in the direction of the more desirable rotor head 4.  According to the embodiment, Although the airflow forming device 30 uses the weight 37 to automatically adjust the posture, However, other suitable configurations of the drive mechanism can be used to adjust the posture.  As a result, The system can rotate with the cover 5 and the rotor head 4,  To control the driving mechanism to adjust the posture of the airflow forming device 30, The direction of the air flow formed by the fan 31 can be maintained in a direction substantially constant -30 - 201026951.  E.g: The air in and out between the nacelle 3 and the outer cover 5, Because there are:  The asymmetry of the shape of the nacelle 3 and various factors of the unequal external pressure caused by the presence of the column 2, So from the cabin 3, It is most suitable for inhalation, Blow out the location. The direction of this air flow can be set arbitrarily. Therefore, the direction of the airflow formed by the airflow forming device 30 can be matched to the most suitable for inhalation, Blow out the location.  Lu [Third embodiment] Next, A third embodiment of the present invention will be described using Figs. 11 to 15 .  The wind power generator 1 of the present embodiment, The same as the basic structure of the first embodiment, only the structure of the air flow forming device is different. Therefore, In the present embodiment, 'only this difference is explained, Duplicate descriptions of other parts are omitted.  In addition, the same constituent elements as in the first embodiment are denoted by the same element symbol. Detailed descriptions thereof are omitted.  Fig. 11 is a front elevational view showing the structure of the air flow forming device 40. Fig. 12 is a side view showing the structure of the air flow forming device 40. Figs. 13 to 15 are front elevational views showing the structure of the air flow forming device 40 at a different rotational position from the nth figure, respectively.  The airflow forming device 40 of the present embodiment is installed at: a space between the front end portion of the rotor head 4 inside the outer cover 5 and the front end portion of the outer cover 5,  That is, it is installed in the inner space of the outer cover 5.  -31 - 201026951 The airflow forming device 40 is provided with: a cylindrical fixed ventilation duct 41 having a circular cross section fixedly mounted inside the outer cover 5, a fan 43 (air supply member) fixed to the inside of the fixed ventilation duct 41, An i-th movable air duct (first movable air duct) 45 that is swingably attached to one end of the fixed air duct 41, The second movable air duct (second movable air duct) 47 is swingably attached to the other end portion of the fixed air duct 41.  The fixed ventilation duct 41 is arranged to: The long axis direction is substantially orthogonal (cross) to the rotation axis L of the rotor head 4, Further, the rotation axis l passes through the long @axis direction and the substantially central position of the opening. that is, With the rotation of the outer cover 5 and the rotor head 4, The longitudinal direction of the fixed vent tube 41 is 36 〇.  The manner of change is rotated around the periphery of the axis of rotation L.  The fan 43 is formed in such a manner as to form an air flow toward one of the directions of the long axis of the fixed vent tube 41. It is fixedly mounted at a substantially intermediate position in the longitudinal direction of the fixed ventilation duct 41.  The first movable air duct 45 has a circular cross section in a cylindrical shape. a fixed venting pipe 41 that is installed at the downstream end G of the flow direction of the airflow formed by the fan 43, A flow path communicating with the fixed vent tube 41 is formed.  The first movable air duct 45 has a first opening 49 at one end. The other end portion of the first movable air duct 49 is rotatably supported by the fixed air duct 41, And connected to the fixed ventilation pipe 41.  The first weight 51 is attached to the opposite end portion of the first opening 49 of the first movable air duct 45.  In addition, Fixed ventilation pipe 41, The cross-sectional shape of the first movable air duct 45 and the second to 32-201026951 movable air duct 47 is not limited to a circular shape. It can also be selected to the desired shape.  The first movable air duct 45 moves in the rotational direction as the fixed air duct 41 rotates. However, since it is supported on the fixed ventilation pipe 41 in a freely rotatable manner, So even when moving in the direction of rotation, Also, the first weight 51, which is heavier, is held in the lower position. The fixed vent tube 41 is rotated (oscillated).  Φ By this, The first opening portion 49 located in the opposite direction to the first weight 51 with the center of the swing therebetween is always positioned upward.  The second movable ventilating pipe 47 is a fixed ventilating pipe 41 having a circular cross section and being installed at an upstream end portion of a flow direction of the air flow formed by the fan 43. A flow path communicating with the fixed vent tube 41 is formed.  One end portion of the second movable air duct 47 has a second opening portion 53. The other end of the second movable air duct 47 is rotatably supported by the fixed air duct 41. And it is in communication with the fixed ventilation duct 41.  The second opening 53' of the second movable air duct 47 is mounted with a plurality of, for example: Two second weights 55° The second movable air duct 47 moves in the rotational direction as the fixed air duct 41 rotates. However, because it is rotatably supported on the fixed ventilation pipe 41, Therefore, even if it is moved in the direction of rotation, the fixed vent tube 41 is rotated (oscillated) by the manner in which the second heavy weight 55 of the heavy weight is kept at the lower position. The second opening portion 53 is located straight at the position -33 - 201026951.  Next, The operation of the wind power generator 1 configured by the above configuration is Mainly, the operation of the airflow forming device 40 will be described.  The wind force of the wind turbine blade 6 is blown from the direction of the rotation axis L of the rotor head 4, When the rotor head 4 is rotated toward the periphery of the rotation axis L, The windmill blade 6 will center on the axis of rotation L', for example: Moves in the circumferential direction toward the periphery of the clock. According to the airflow forming device 40', the fan 43 forms the air φ airflow from the second movable air duct 47 side toward the first movable air duct 45 side. The fan 43 passes the air sucked from the second opening portion 53 through the second movable air duct 47, The fixed ventilation duct 41 and the first movable ventilation duct 45 are discharged from the first opening 49.  As shown in Fig. 11 and Fig. 12, When the fixed air duct 41 is kept horizontal, When the first movable air duct 45 is at the left position, The first movable air duct 45 is located below because the first weight 51 is located. The first opening portion 49 is opened upward. The second movable air duct 47 is because the second weight is located below. The second opening portion 53 is opened downward.  风扇 The fan 43 is configured to pass air sucked from the second opening portion 53 through the second movable air duct 47, The fixed air duct 41 and the first movable air duct 45 are discharged from the first opening 49, therefore, The fan 43 draws air from below and blows air upward.  When the windmill blade 6a is further rotated toward the periphery of the clock, The fixed air duct 41 will then rotate toward the periphery of the rotation axis L,  The position as shown in Fig. 13 to Fig. 15 is sequentially changed.  at this time, The first movable air duct 45, By the action of the first weight 51 to move downward from -34 to 201026951, the first opening 49 can be kept open upward.  and, The second movable air duct 47, In the state in which the second weight 55 is moved downward, the second opening 53 can be kept open downward.  therefore, Although the position of the airflow forming device 40 in the width direction changes, However, it is still possible to form an air flow in a substantially constant direction 〇 from the bottom to the top.  Yes, The air flow forming device 40 is attached to the inside of the outer cover 5, The formation of a large raft is the flow from the bottom to the top, The circulation of the air inside the outer cover 5 can be made better.  With this, The inside of the outer cover 5 can be efficiently cooled. In addition, The high-temperature air that has been warmed by the inclination driving device 12 in the outer cover 5 and is warmed up is guided upward by the increase in buoyancy thereof. Complement this phenomenon, It will further promote the circulation of air more effectively.  Φ Again, The airflow formed by the airflow forming device 40 flows in a substantially constant direction from the lower side to the nacelle 3, The downstream side of the airflow coincides with the region formed on the upper portion of the communication passage 9 from the side of the outer cover 5 to the side of the nacelle 3. The upstream side of the airflow coincides with the region formed on the lower portion of the communication passage 9 from the nacelle 3 side toward the outer cover 5 side.  With this, The circulation of air formed between the inside of the outer cover 5 and the inside of the nacelle 3 can be smoothly performed, Therefore, the inside of the outer cover 5 can be cooled more efficiently.  In this way, the inside of the outer cover 5 can be efficiently and surely cooled -35-201026951, The control device of the tilt driving device 12 can be normally operated to cause power generation to continue.  As the size of the wind power generator 1 is increased, temperature management for cooling the inside of the outer cover 5 can be performed. The reliability and durability of the wind power generator 1 are improved.

又，針對於固定通風管41、第1可動通風管45以及 第2可動通風管47亦可採用如第16圖〜第18圖所示的 構成方式。 Q 亦即，在這個變形例中，固定通風管41係兩端皆呈 開口。在固定通風管41的兩端部的外側位置上，空出一 間隔且位在對於旋轉軸線L構成點對稱的位置上，固定安 裝著一對輔助通風管42於外罩5上。 在固定通風管41的兩端部上，在與一對輔助通風管 42對應的位置上，具有可擺動地安裝於固定通風管41的 可動通風管46、48。 可動通風管46、48係利用設在構成空氣氣流路的曲 @ 面部的相對向位置上的兩個樞軸點50、52，可擺動地被 支承於固定通風管41。 在可動通風管46的樞軸點50的旁邊，安裝著重錘 52。在可動通風管48的曲面部的一端部安裝著重錘56。 可動通風管46、48係隨著固定通風管41的旋轉，以 讓重錘52、56保持在下方位置的方式，對於固定通風管 41進行擺動。 如第16圖所示般地，當固定通風管41位於朝上下方 -36- 201026951 向延伸的位置時，可動通風管46、48係位在不會蓋住固 定通風管41的開口部的位置之故，風扇43係可通過固定 通風管41來形成從下側朝向上側的空氣氣流。 當風車葉片6a更進一步朝時鐘外圍方向旋轉，固定 通風管41抵達第17圖所示的位置的話，可動通風管46 、48雖然是移動到固定通風管41的開口部側，但依然是 位於不會蓋住固定通風管41的開口部的位置之故，風扇 43係可形成通過固定通風管41從大致下側朝向大致上側 的空氣氣流。 當風車葉片6a更進一步朝時鐘外圍方向旋轉，而固 定通風管41抵達第18圖所示的位置，也就是位於對於第 16圖所示的位置剛好呈現上下顛倒的位置時，可動通風 管46、48係移動到將固定通風管41的開口部蓋住的位置 〇 可動通風管46係與輔助通風管42 —起形成可將下側 ® 的空氣引導到固定通風管41的通風管部。另外，可動通 風管48則是與輔助通風管42 —起形成可將來自固定通風 管41的空氣氣流往上方引導的通風管部。 藉此，即使風扇43所形成的固定通風管41內的空氣 氣流是從上側朝向下側的氣流，氣流形成裝置40亦可形 成從下側朝向上側的氣流。亦即，這個變形例所揭示的氣 流形成裝置40係可在對於機艙3之從下方朝向上方的大 致一定的方向上形成氣流。 -37- 201026951 [第4實施方式] 接下來，使用第19圖以及第20圖來說明本發明的第 4實施方式。 本實施方式的風力發電裝置1’與第1實施方式的基 本結構是相同的，只有在氣流形成裝置的結構不同。因此 ，在本實施方式中，只就這個不同點予以說明，並省略其 他部分的重複說明。 此外，與第1實施方式相同的構成要素都標註同一元 φ 件符號，並省略其詳細的說明。 第19圖係顯示氣流形成裝置60的槪略結構的側面示 意圖。第20圖係顯示氣流形成裝置60的運作之正面示意 圖。 本實施方式的氣流形成裝置60係安裝在：外罩5的 內部之轉子頭4的前端部與外罩5的前端部之間的空間， 亦即，安裝在外罩5的內部空間。 氣流形成裝置60係具備有：設置在外罩5的側面上 〇 之貫穿該側面的至少1個大致呈圓形的孔也就是貫通孔部 6 1、以及將貫通孔部6 1予以開閉的開閉構件63。 開閉構件63係具備有：一蓋部65，其爲略圓形的板 材’其兩個側面分別構成封閉面65A以及開放面65B ;— 擺動軸67，其係沿著開放面65B被安裝於該開放面65B 內，而且是可旋轉地被支承於外罩5;被安裝於開放面 65B的重錘（第3重錘）69。 因爲擺動軸67係被安裝成通過開放面65B的中心， -38- 201026951 並且沿著該中心，所以蓋部65係在較之其厚度方向的中 心位置更靠近開放面65B側的位置，可旋轉地被支承於外 罩5。 蓋部65係以擺動軸67作爲中心進行旋轉，以使開放 面65B或封閉面65A變成與貫通孔部61相對向。 蓋部65係被製作成：當封閉面65A與貫通孔部61 相對向的時候，就將該貫通孔部61予以封閉。 ® 其次，說明這種結構的氣流形成裝置60的運作。 風力發電裝置1，因爲風車葉片6 —直是朝向迎風方 向，所以外罩5也是朝向迎風方向。當貫通孔部61處於 開放的情況下，風將會通過該貫通孔部61流入外罩5的 內部。當貫通孔部61被封閉的情況下，風就不會通過該 貫通孔部61流入外罩5的內部。 因爲貫通孔部61是設在外罩5的側面，所以當外罩 5朝向轉子頭4的軸線外圍旋轉的話，就會以第20圖所 ^ 示的方式以描繪出圓周的方式移動位置。 蓋部65係以讓重錘69 —直保持在下方位置的方式進 行轉動，所以無論是在哪一個旋轉位置，蓋部65都是一 直讓開放面65B位於下側。 當貫通孔部61位於例如：第20圖所示的位置E的情 況下，開閉構件63係位於外罩5的上方，所以位在蓋部 6 5的下側的開放面6 5 B就會位於與貫通孔部61相對向的 位置。 當貫通孔部61越過位置F而來到例如：位置G的話 -39- 201026951 ，開放面65B係位於較之封閉面65A更上側，亦即，重 錘69變成較之擺動軸67更上側，所以蓋部65將會因重 錘69要往下側移動的作用而朝擺動軸67的外圍旋轉，變 成封閉面65A與貫通孔部61相對向的位置，而將貫通孔 部61予以封閉。 亦即，當貫通孔部6 1在於例如：第2 0圖所示的位置 Η的情況下，開閉構件63係位於外罩5的下方，所以位 在蓋部65的上側的封閉面65 Α將會跑到與貫通孔部61 φ 相對向的位置。 當貫通孔部61越過位置Η、I而抵達例如：位置J的 話，開放面65Β係位於較之封閉面65Α更上側，亦即， 變成重錘69較之擺動軸67更上側，因此蓋部65受到重 錘69欲往下側移動的作用而會朝向擺動軸67的外圍旋轉 ’又變成封閉面65Α係在上側。如此一來，在這個部分 的時候，開閉構件63係位於貫通孔部61，亦即外罩5的 上方，所以位在下側的蓋部6 5的開放面6 5 Β係位於與貫 © 通孔部6 1相對向的位置。 當開閉構件63位在外罩5的略下部位置的話，開放 面65Β將會與貫通孔部61相對向，而將貫通孔部61予以 開放，所以外部的風將會通過貫通孔部61而流入外罩5 的內部。 另一方面，當開閉構件63位在外罩5的略上部位置 的話，封閉面65Α將會與貫通孔部61相對向，而將貫通 孔部61予以封閉，所以外部的風就不會通過貫通孔部61 -40- 201026951 流入外罩5的內部。 是以’將貫通孔部61予以開放的位置係選定在外罩 5的下部位置，所以雨水等的侵入可以較少。 貫通孔部61係在外罩5的略下半分的位置被開放， 在略上半分的位置被封閉，所以在被開放的位置所流入的 氣流，可以形成大槪是從下側朝向上側的空氣氣流。 以這種方式，氣流形成裝置60在外罩5的內部形成 φ 大槪是從下側朝向上側的空氣氣流，因此可使外罩5的內 部的空氣的流通良好地進行。 藉此，可有效率地對於外罩5內部進行冷卻。此外， 將外罩5內的傾角驅動裝置1 2等予以冷卻而受到暖化後 的高溫空氣會利用其浮力的增加而被朝向上方引導，與這 種現象相輔相成，將可更進一步有效地促進空氣的流通。 又，氣流形成裝置60所形成的氣流係對於機艙3從 下方往上方朝向大致一定的方向流動之故，氣流的下游側 • 係與形成在連通路9的上部的從外罩5側往機艙3側流動 的區域一致。氣流的上游側係與形成在連通路9的下部的 從機艙3側往外罩5側流動的區域一致。 如此一來，形成在外罩5的內部與機艙3的內部之間 的空氣的循環得以順暢地進行，因此，可更有有效率地進 行外罩5內部的冷卻。 是以，可有效率且確實地將外罩5內予以冷卻之故’ 可令傾角驅動裝置12的控制機器類正常地作動而可使得 發電持續地進行。 -41 - 201026951 隨著風力發電裝置1的大型化，藉由執行對於外罩5 內部加以冷卻的溫度管理，能夠提昇風力發電裝置1的可 靠性和耐久性。 此外，貫通孔部61亦可在圓周方向上設置複數個。 如此一來，可形成比較連續的氣流。 此外，本發明並不限定爲上述的各實施方式而已，只 要在不超逸本發明的要旨的範圍內，亦可做適宜地變更。 參 【圖式簡單說明】 第1圖係顯示本發明的第1實施方式的風力發電裝置 的整體槪略結構的側面圖。 第2圖係顯示第1圖的轉子頭的結構的局部擴大圖。 第3圖係顯示本發明的第1實施方式的外罩內部的側 面示意圖。 第4圖係顯示本發明的第1實施方式的外罩內部的正 面示意圖。 @ 第5圖係顯示本發明的第〗實施方式的外罩內部的側 面示意圖。 第6圖係顯示本發明的第丨實施方式的外罩內部的正 面示意圖。 第7圖係顯示本發明的第丨實施方式的風車葉片的位 置與氣流形成裝置的風扇的旋轉數之關係的圖表。 .第8圖係顯示本發明的第2實施方式的外罩內部及其 週邊結構的側面示意圖。 -42- 201026951 第9圖係顯示本發明的第2實施方式的外罩內部及其 週邊結構的正面示意圖。 第10圖係顯示本發明的第2實施方式的外罩內部及 其週邊結構的正面示意圖。 第11圖係顯示本發明的第3實施方式的氣流形成裝 置的結構的正面示意圖。 第12圖係顯示本發明的第3實施方式的氣流形成裝 φ 置的結構的側面示意圖。 第13圖係顯示本發明的第3實施方式的氣流形成裝 置在不同的旋轉位置上的結構的正面示意圖。 第14圖係顯示本發明的第3實施方式的氣流形成裝 置在不同的旋轉位置上的結構的正面示意圖。 第15圖係顯示本發明的第3實施方式的氣流形成裝 置在不同的旋轉位置上的結構的正面示意圖。 第16圖係顯示本發明的第3實施方式的氣流形成裝 ® 置的變形例在某一旋轉位置上的結構的正面示意圖。 第17圖係顯示本發明的第3實施方式的氣流形成裝 置的變形例在其他的旋轉位置上的結構的正面示意® ° 第18圖係顯示本發明的第3實施方式的氣流形成裝 置的變形例在另一個其他的旋轉位置上的結構的正面示意 圖。 第19圖係顯示本發明的第4實施方式的氣流形成裝 置的槪略結構的側面示意圖。 第20圖係顯示本發明的第4實施方式的氣•流形成裝 -43- 201026951 置的運作的正面示意圖。 【主要元件符號說明】 1 :風力發電裝置 3 :機艙 4 :轉子頭 5 :外罩 6 :風車葉片 · 6a、6b :風車葉片 7 :發電設備 8 :主軸 9 :連通路 1 8、1 9 :風扇 20 :氣流形成裝置 2 1 :風扇 3 0 :氣流形成裝置 @ 3 1 :風扇 40 :氣流形成裝置 41 :固定通風管 43 :風扇 45 :第1可動通風管 47 :第2可動通風管 5 1 :第1重錘 55 :第2重錘 -44- 201026951 60 :氣流形成裝置 6 1 :貫通孔部 63 :開閉構件 65 :蓋部 65 A :封閉面 65B :開放面 69 :重錘 φ L :旋轉軸線 L6 :軸線 -45Further, the fixed air duct 41, the first movable air duct 45, and the second movable air duct 47 may be configured as shown in Figs. 16 to 18 . That is, in this modification, the fixed ventilation duct 41 has openings at both ends. At a position outside the both end portions of the fixed vent pipe 41, a space is formed and positioned at a point symmetry with respect to the rotation axis L, and a pair of auxiliary vent pipes 42 are fixedly mounted on the outer cover 5. At both end portions of the fixed vent pipe 41, movable vent pipes 46, 48 rotatably attached to the fixed vent pipe 41 are provided at positions corresponding to the pair of auxiliary vent pipes 42. The movable air ducts 46, 48 are swingably supported by the fixed air duct 41 by means of two pivot points 50, 52 provided at opposite positions of the curved surface portion constituting the air flow path. A heavy hammer 52 is mounted beside the pivot point 50 of the movable vent tube 46. A heavy hammer 56 is attached to one end portion of the curved surface portion of the movable air duct 48. The movable air ducts 46, 48 swing with respect to the fixed air duct 41 in such a manner that the weights 52, 56 are held in the lower position as the fixed air duct 41 rotates. As shown in Fig. 16, when the fixed air duct 41 is located at an upwardly extending position - 36 - 201026951, the movable air ducts 46, 48 are positioned at positions that do not cover the opening of the fixed air duct 41. For this reason, the fan 43 can form an air flow from the lower side toward the upper side by fixing the air duct 41. When the wind turbine blade 6a is further rotated toward the periphery of the clock, and the fixed vent pipe 41 reaches the position shown in Fig. 17, the movable vent pipe 46, 48 is moved to the opening side of the fixed vent pipe 41, but is still located at Since the position of the opening of the fixed ventilation duct 41 is covered, the fan 43 can form an air flow from the substantially lower side toward the substantially upper side by the fixed ventilation duct 41. When the windmill blade 6a is further rotated toward the peripheral direction of the clock, and the fixed air duct 41 reaches the position shown in Fig. 18, that is, when the position shown in Fig. 16 is just upside down, the movable air duct 46, The 48 series is moved to a position where the opening of the fixed ventilation duct 41 is covered. The movable ventilation duct 46 forms a ventilation duct portion that can guide the air of the lower side to the fixed ventilation duct 41 together with the auxiliary ventilation duct 42. Further, the movable duct 48 is formed with the auxiliary duct 42 to form a duct portion for guiding the air flow from the fixed duct 41 upward. Thereby, even if the air flow in the fixed air duct 41 formed by the fan 43 is the air flow from the upper side toward the lower side, the air flow forming device 40 can also form the air flow from the lower side toward the upper side. That is, the air flow forming device 40 disclosed in this modification can form an air flow in a substantially constant direction from the lower side toward the upper side of the nacelle 3. -37-201026951 [Fourth embodiment] Next, a fourth embodiment of the present invention will be described using Figs. 19 and 20. The wind turbine generator 1' of the present embodiment is the same as the basic structure of the first embodiment, and differs only in the configuration of the airflow forming device. Therefore, in the present embodiment, only the difference will be described, and the overlapping description of the other portions will be omitted. In addition, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig. 19 is a side view showing a schematic structure of the air flow forming device 60. Fig. 20 is a front elevational view showing the operation of the air flow forming device 60. The airflow forming device 60 of the present embodiment is attached to a space between the front end portion of the rotor head 4 inside the outer cover 5 and the front end portion of the outer cover 5, that is, in the inner space of the outer cover 5. The airflow forming device 60 is provided with at least one substantially circular hole penetrating the side surface of the outer cover 5, that is, a through hole portion 161, and an opening and closing member that opens and closes the through hole portion 6 1 63. The opening and closing member 63 is provided with a cover portion 65 which is a substantially circular plate member whose both side faces respectively constitute a closing surface 65A and an opening surface 65B; a swinging shaft 67 which is attached to the opening surface 65B The inside of the open surface 65B is rotatably supported by the outer cover 5 and the weight (third weight) 69 attached to the open surface 65B. Since the swing shaft 67 is installed to pass through the center of the open surface 65B, -38-201026951 and along the center, the cover portion 65 is rotated closer to the open surface 65B side than the center position in the thickness direction thereof, and is rotatable. The ground is supported by the outer cover 5. The lid portion 65 is rotated about the swing shaft 67 so that the open surface 65B or the closing surface 65A faces the through hole portion 61. The lid portion 65 is formed such that the through hole portion 61 is closed when the closing surface 65A faces the through hole portion 61. ® Next, the operation of the airflow forming device 60 of this configuration will be described. In the wind power generator 1, since the wind turbine blade 6 is straight toward the windward direction, the outer cover 5 is also oriented in the windward direction. When the through hole portion 61 is open, the wind will flow into the inside of the outer cover 5 through the through hole portion 61. When the through hole portion 61 is closed, the wind does not flow into the inside of the outer cover 5 through the through hole portion 61. Since the through hole portion 61 is provided on the side surface of the outer cover 5, when the outer cover 5 is rotated toward the outer periphery of the axis of the rotor head 4, the position is moved in such a manner as to be drawn as shown in Fig. 20. Since the lid portion 65 is rotated so that the weight 69 is held straight downward, the lid portion 65 is always at the lower side of the opening portion 65B regardless of the rotational position. When the through hole portion 61 is located at, for example, the position E shown in Fig. 20, the opening and closing member 63 is positioned above the outer cover 5, so that the open surface 6 5 B located on the lower side of the cover portion 65 is located The position where the through hole portion 61 faces each other. When the through hole portion 61 passes the position F and comes to, for example, the position G-39-201026951, the open surface 65B is located above the closed surface 65A, that is, the weight 69 becomes higher than the swing shaft 67, so The lid portion 65 is rotated toward the outer periphery of the swing shaft 67 by the action of the weight 69 moving downward, and becomes a position where the closing surface 65A faces the through hole portion 61, and the through hole portion 61 is closed. That is, when the through hole portion 61 is, for example, at the position Η shown in FIG. 20, since the opening and closing member 63 is located below the outer cover 5, the closing surface 65 位 located on the upper side of the cover portion 65 will It ran to a position facing the through hole portion 61 φ. When the through hole portion 61 reaches the position Η, I and reaches, for example, the position J, the open surface 65 is located above the closed surface 65Α, that is, the weight 69 becomes higher than the swing shaft 67, so the cover portion 65 By the action of the weight 69 moving to the lower side, it is rotated toward the periphery of the swing shaft 67, and becomes the closed surface 65, and is attached to the upper side. As a result, in this portion, the opening and closing member 63 is located above the through hole portion 61, that is, above the outer cover 5. Therefore, the open surface 65 of the cover portion 65 located on the lower side is located in the through hole portion. 6 1 relative position. When the opening and closing member 63 is located at a slightly lower position of the outer cover 5, the open surface 65A will face the through hole portion 61, and the through hole portion 61 will be opened, so that the external wind will flow into the outer cover through the through hole portion 61. The interior of 5. On the other hand, when the opening and closing member 63 is located at a slightly upper position of the outer cover 5, the closing surface 65A will face the through hole portion 61, and the through hole portion 61 is closed, so that the external wind does not pass through the through hole. The portion 61 - 40 - 201026951 flows into the inside of the outer cover 5 . The position at which the through hole portion 61 is opened is selected at the lower position of the outer cover 5, so that the intrusion of rainwater or the like can be less. The through hole portion 61 is opened at a position slightly lower than the half of the outer cover 5, and is closed at a position slightly at the upper half. Therefore, the airflow flowing in the open position can form an air flow from the lower side toward the upper side. . In this manner, the air flow forming device 60 forms the air flow in the inside of the outer cover 5, which is the air flow from the lower side toward the upper side, so that the air circulation inside the outer cover 5 can be favorably performed. Thereby, the inside of the outer cover 5 can be efficiently cooled. In addition, the high-temperature air that has been warmed by the inclination driving device 1 2 in the outer cover 5 and the warmed air is guided upward by the increase in buoyancy, and complements this phenomenon, and the air can be further effectively promoted. Circulation. Further, since the airflow formed by the airflow forming device 60 flows in a substantially constant direction from the lower side to the nacelle 3, the downstream side of the airflow and the upper portion of the communication passage 9 from the outer cover 5 side to the nacelle 3 side The flow area is consistent. The upstream side of the airflow coincides with the region formed on the lower portion of the communication passage 9 from the nacelle 3 side toward the outer cover 5 side. As a result, the circulation of air formed between the inside of the outer cover 5 and the inside of the nacelle 3 is smoothly performed, so that the inside of the outer cover 5 can be more efficiently cooled. Therefore, the inside of the outer cover 5 can be efficiently and surely cooled, so that the control device of the tilt driving device 12 can be normally operated to cause the power generation to continue. -41 - 201026951 With the increase in size of the wind power generator 1, by performing temperature management for cooling the inside of the outer cover 5, the reliability and durability of the wind power generator 1 can be improved. Further, the through hole portion 61 may be provided in plural in the circumferential direction. In this way, a relatively continuous flow of air can be formed. The present invention is not limited to the above-described embodiments, and may be modified as appropriate without departing from the scope of the invention. [Brief Description of the Drawings] Fig. 1 is a side view showing the overall schematic configuration of a wind turbine generator according to a first embodiment of the present invention. Fig. 2 is a partially enlarged view showing the structure of the rotor head of Fig. 1. Fig. 3 is a side view showing the inside of the outer cover of the first embodiment of the present invention. Fig. 4 is a front elevational view showing the inside of a casing according to the first embodiment of the present invention. @ Fig. 5 is a side view showing the inside of the outer cover of the embodiment of the present invention. Fig. 6 is a front elevational view showing the inside of a casing of a third embodiment of the present invention. Fig. 7 is a graph showing the relationship between the position of the wind turbine blade according to the third embodiment of the present invention and the number of rotations of the fan of the air flow forming device. Fig. 8 is a side view showing the inside of the outer cover and its peripheral structure according to the second embodiment of the present invention. -42- 201026951 Fig. 9 is a front elevational view showing the inside of the outer cover and its peripheral structure according to the second embodiment of the present invention. Fig. 10 is a front elevational view showing the inside of the outer cover and its peripheral structure according to the second embodiment of the present invention. Fig. 11 is a front elevational view showing the configuration of an air flow forming device according to a third embodiment of the present invention. Fig. 12 is a side view showing the structure of the air flow forming device φ according to the third embodiment of the present invention. Fig. 13 is a front elevational view showing the structure of the airflow forming device of the third embodiment of the present invention at different rotational positions. Fig. 14 is a front elevational view showing the structure of the airflow forming device of the third embodiment of the present invention at different rotational positions. Fig. 15 is a front elevational view showing the structure of the airflow forming device of the third embodiment of the present invention at different rotational positions. Fig. 16 is a front elevational view showing the configuration of a modification of the airflow forming device according to the third embodiment of the present invention at a certain rotational position. Fig. 17 is a front view showing a modification of the airflow forming device according to the third embodiment of the present invention at another rotational position. Fig. 18 is a view showing a modification of the airflow forming device according to the third embodiment of the present invention. A frontal view of the structure at another rotational position. Fig. 19 is a side elevational view showing the schematic configuration of the airflow forming device of the fourth embodiment of the present invention. Fig. 20 is a front elevational view showing the operation of the gas flow forming device - 43 - 201026951 of the fourth embodiment of the present invention. [Explanation of main component symbols] 1 : Wind turbine generator 3: Engine room 4: Rotor head 5: Cover 6: Wind turbine blades 6a, 6b: Wind turbine blades 7: Power generation equipment 8: Main shaft 9: Communication path 1 8、1 9 : Fan 20: air flow forming device 2 1 : fan 3 0 : air flow forming device @ 3 1 : fan 40: air flow forming device 41: fixed air duct 43: fan 45: first movable air duct 47: second movable air duct 5 1 : First weight 55: second weight - 44 - 201026951 60 : air flow forming device 6 1 : through hole portion 63 : opening and closing member 65 : cover portion 65 A : closing surface 65B : open surface 69 : weight φ L : rotation Axis L6: axis -45

Claims (1)

201026951 七、申請專利範圍： 1· 一種風力發電裝置，係具備： 安裝著風車葉片的轉子頭、 包覆該轉子頭的外罩、 收納設置著與該轉子頭連結的發電設備的機艙， 在前述外罩的內部與前述機艙的內部之間，令空氣流 通的風力發電裝置，其特徵爲： 在前述外罩的內部具備有：用以形成氣流的氣流 @ 形成裝置。 2. 如申請專利範圍第1項所述的風力發電裝置，其 中，前述氣流形成裝置係從下側朝向上側形成前述氣流。 3. 如申請專利範圍第1或2項所述的風力發電裝置 ，其中，前述氣流形成裝置係具備有：在送風方向上形成 空氣氣流的送風構件。 4. 如申請專利範圍第3項所述的風力發電裝置，其 中，前述送風構件係在前述外罩的內部被固定安裝成：讓 〇 前述送風方向與前述轉子頭的軸線交叉，並且選擇性地在 沿著前述送風方向的兩側的其中一側，形成空氣氣流。 5. 如申請專利範圍第3項所述的風力發電裝置，其 中，前述送風構件係被配置成：讓前述送風方向與前述轉 子頭的軸線交叉，並且是以可朝向與前述送風方向大致正 交的旋轉軸線的外圍旋轉的方式被安裝在前述外罩的內部 〇 6. 如申請專利範圍第3項所述的風力發電裝置，其 -46- 201026951 中，前述氣流形成裝置係具備有： 呈筒狀’並且係以其長軸方向與前述轉子頭的軸線交 叉的方式被固定安裝在前述外罩的內部的固定通風管、 被固定安裝在該固定通風管的長軸方向上的中間位置 之朝向該長軸方向上的其中一個方向形成空氣氣流的送風 構件、 以形成前述固定通風管的延長部的方式，可擺動地被 e 安裝於前述固定通風管的前述空氣氣流的下游側端部之第 1可動通風管； 該第1可動通風管係對應於隨著前述外罩以及前述轉 子頭的轉動所導致的前述固定通風管的位置移動而進行擺 動，以將前述空氣氣流的吹出方向朝向前述大致一定的方 向的下游側。 7. 如申請專利範圍第6項所述的風力發電裝置，其 中，前述第1可動通風管係在隔介著其擺動中心之位於前 Φ 述空氣氣流的吹出口的相反側，安裝著第1重錘。 8. 如申請專利範圍第6或7項所述的風力發電裝置 ，其中，前述氣流形成裝置係具備：以形成前述固定通風 管的延長部的方式，可擺動地被安裝在前述固定通風管的 前述空氣氣流的上游側端部之第2可動通風管， 該第2可動通風管係對應於隨著前述外罩以及前述轉 子頭的轉動所導致的前述固定通風管的位置移動而進行擺 動，以將前述空氣氣流的吸入方向朝向前述大致一定的方 向的上游側。 -47- 201026951 9·如申請專利範圍第8項所述的風力發電裝置，其 中，前述第2可動通風管係在前述空氣氣流的吸入口側， 安裝著第2重錘。 10. 如申請專利範圍第1或2項所述的風力發電裝置 ，其中，前述氣流形成裝置係具備有：設在前述外罩的側 面上之將其貫穿的至少1個貫通孔部 '以及將該貫通孔部 予以開閉的開閉構件。 11. 如申請專利範圍第1〇項所述的風力發電裝置， 其中，前述開閉構件係具備有：蓋部以及第3重錘，該蓋 部係兩側面分別作爲封閉面以及開放面的板材，在較之厚 度方向的中心位置更靠近前述開放面側的位置，可旋轉地 被支承於前述外罩；該第3重錘係被安裝在前述開放面， 當前述封閉面與前述貫通孔部相對向時，就將該貫通 孔部予以封閉。 -48-201026951 VII. Patent application scope: 1. A wind power generation device comprising: a rotor head to which a wind turbine blade is attached, a cover covering the rotor head, and a nacelle in which a power generating device connected to the rotor head is housed, in the outer cover The wind power generator that circulates air between the inside and the inside of the nacelle is characterized in that: inside the outer cover, an air flow forming device for forming an air flow is provided. 2. The wind turbine generator according to claim 1, wherein the airflow forming device forms the airflow from a lower side toward an upper side. 3. The wind power generator according to claim 1 or 2, wherein the airflow forming device includes a air blowing member that forms an air flow in a blowing direction. 4. The wind turbine generator according to claim 3, wherein the air blowing member is fixedly mounted inside the outer cover such that the air blowing direction intersects with an axis of the rotor head, and is selectively Air flow is formed along one of the sides of the aforementioned air blowing direction. 5. The wind power generator according to claim 3, wherein the air blowing member is disposed such that the air blowing direction intersects with an axis of the rotor head and is substantially orthogonal to the air blowing direction The wind power generating device according to claim 3, wherein the airflow forming device is provided in the form of a cylinder. And a fixed vent pipe fixedly mounted inside the outer cover in such a manner that its long axis direction intersects with the axis of the aforementioned rotor head, and the intermediate position fixedly mounted in the longitudinal direction of the fixed vent pipe is oriented toward the length a wind blowing member that forms an air flow in one of the axial directions, and a first movable portion that is swingably attached to the downstream end of the air flow of the fixed air duct so as to form an extension of the fixed air duct a venting pipe; the first movable venting pipe corresponds to the foregoing as a result of the rotation of the aforementioned outer cover and the aforementioned rotor head Vent tube centered position for swinging movement, to the blowing direction of the air flow toward the downstream side of a substantially constant direction. 7. The wind power generator according to claim 6, wherein the first movable air duct is mounted on the opposite side of the air outlet of the front air Φ passing through the center of the swing. Heavy hammer. 8. The wind turbine generator according to claim 6 or 7, wherein the airflow forming device is provided to be swingably mounted to the fixed ventilation duct so as to form an extension of the fixed ventilation duct. a second movable ventilation duct at an upstream end of the air flow, wherein the second movable ventilation duct swings in response to a positional movement of the fixed air duct due to rotation of the outer cover and the rotor head, so as to The suction direction of the air flow is directed to the upstream side in the substantially constant direction. The wind turbine generator according to claim 8, wherein the second movable vent pipe is attached to the suction port side of the air flow, and the second weight is attached. The wind turbine generator according to claim 1, wherein the airflow forming device includes at least one through hole portion that is provided in a side surface of the outer cover and that penetrates An opening and closing member that opens and closes through the hole portion. The wind turbine generator according to the first aspect of the invention, wherein the opening and closing member includes a lid portion and a third weight, wherein the lid portion is a plate material having a closed surface and an open surface on both side surfaces. a position closer to the open surface side than a center position in the thickness direction, rotatably supported by the outer cover; the third weight is attached to the open surface, and the closed surface faces the through hole portion At this time, the through hole portion is closed. -48-
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JP2010159663A (en) 2010-07-22
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